OneKey Classic 1S Pure BTC-Only
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Pickup available at SIAMBC Bangkok (Mon-Sat 9:00-17:00)
Usually ready in 1 hour1-year warranty
100% genuine stock from authorized channels
Free express shipping nationwide, delivered in 1-2 days
Arrives faulty, we replace it straight away
Add a steel backup, save 10%
Shipping information
Processing:
- Orders are processed and dispatched the same day.
Delivery:
- Free shipping nationwide. Estimated delivery 1-2 business days, faster in Bangkok.
- Same-day delivery in Bangkok by Grab or LINEMAN. Call or message us on LINE to arrange it and pay by bank transfer.
- Or collect from our Bangkok store, Monday to Saturday, 9:00 AM to 5:00 PM.
Tracking:
- Once your order ships you will receive a confirmation email with a tracking number.
Return and Exchange Policy
Faulty on arrival: if a device arrives defective — a broken screen, a connectivity fault — we replace it with a new one straight away. No forms, no waiting on the manufacturer.
Warranty: hardware wallets carry a 1-year warranty, and claims are handled by us rather than an overseas support queue. CryptoSafe steel backup products are sold without warranty, as stated on those product pages.
Change of mind or wrong model: we do not accept returns or give refunds, whether or not the box has been opened. We accept returns for defective products only, which we exchange within 30 days of delivery. This is a security limitation of these devices: once a device has left us, we cannot assure the next customer that it has not been interfered with.
How to arrange an exchange for a faulty item
- Message us on LINE at @siambc or email order@siambc.com before sending anything back.
- Include your order number, what is wrong, and a photo or short video.
- Send the item back to us at your own shipping cost. Once we have checked it, we exchange it.
Refunds: faulty items are exchanged rather than refunded.
Pairs well with
The OneKey Classic 1S Pure BTC-Only is the battery-free Classic 1S Pure, shipped with Bitcoin-only firmware. Everything that is not Bitcoin is hidden, so there is less on the device to think about and less code in the way.
Bitcoin-only, but not permanently
OneKey's own wording is that it ships with the BTC-only system and can be switched to the multi-coin system at any time. The switch is made in device management in the OneKey app. It installs new firmware, so you import your recovery phrase again afterwards, and you can switch back the same way.
So you get a Bitcoin-focused device out of the box without locking yourself out of everything else later.
Battery-free
- No battery — nothing to charge, nothing to degrade
- 18.3 g, 86 x 52 x 5.2 mm card format
- Powered over USB-C when connected
Security
- Secure element: THD89, EMVCo certified and CC EAL6+
- Designed to resist physical tampering and side-channel attacks
- PIN and passphrase protection
Open source you can actually check
OneKey publish firmware and apps as open source with reproducible builds, so anyone can compile the code and confirm it matches what shipped on the device. Independent third-party security audits back it up.
Specifications
- 1.54-inch monochrome OLED, 128 x 64, with an anti-glare polarizer
- USB-C, Bluetooth
- 86 x 52 x 5.2 mm, 18.3 g
- High-strength PC + ABS composite
- Operating range −20°C to 55°C
Compatibility
- iOS 14 or later, Android 8 or later
- Windows 10+, macOS 10.11+, Linux
Backup
- 12 or 24-word recovery phrase
- Optional passphrase for hidden wallets
Common questions
Is this different hardware from the standard Pure?
The published specifications are identical — same chip, certification, screen, dimensions, weight and materials. The difference is which system it ships with.
Can I switch it to multi-coin later?
Yes, in device management in the OneKey app. It installs new firmware, so you import your recovery phrase again afterwards, and you can switch back the same way.
Why choose Bitcoin-only?
Fewer assets on screen and a narrower feature set. If you only hold Bitcoin, there is nothing else to navigate past.
Does it need charging?
No. It has no battery and takes power from the USB-C connection.
Buying from SIAMBC
SIAMBC is Thailand's authorized OneKey distributor, with a physical store in Bangkok. Every unit is new, sealed and sourced directly. Support is available in Thai and English.
ONE RULE TO REMEMBER
Anyone who asks for your recovery phrase is a scammer. No exceptions.
Neither SIAMBC nor OneKey will ever ask for it, whatever reason is given — warranty claims, identity verification, system updates or account recovery. Those words are the key to your funds. Whoever has them owns your crypto, and it can never be recovered.
Register your warranty online Register ›
OneKey Classic 1S Pure BTC-Only
Keep your Seed Phrase on steel
A Seed Phrase written on paper is at risk from fire, flood and termites. Stainless steel keeps it safer. Buy it with this hardware wallet and save 10% instantly.
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10% off togetherCryptoSafe ProReady-made steel letters slide in, no stamping needed1,611 ฿ with this walletRegular 1,790 ฿ -
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What's in the box
Swipe to see all 4 items
OneKey Classic 1S Pure BTC-OnlyBody
USB-C cableFor connecting to a computer and charging
3 Seed Phrase sheetsHolds up to 24 words
Getting started guideWith the use leaflets and 1 sticker
Technical specifications
Size and materials
- Dimensions
- 86 × 52 × 5.2 mm, the size of a card
- Weight
- About 19 g
- Material
- High-strength PC+ABS
- Colors
- Dark see-through body showing the circuit board, with an orange Bitcoin mark
- Buttons
- 4 buttons: power, up, down, confirm
Display
- Screen
- 1.54-inch black and white OLED
- Resolution
- 128 × 64
Security
- Secure element
- THD89 (CC EAL6+)
- PIN
- Up to 9 digits, using 1 to 9
- Wrong PIN
- After 5 or 10 wrong attempts (depending on firmware version) the device wipes itself
- Passphrase
- Supported, including a hidden wallet tied to a PIN
- Software
- Open source, audited by SlowMist
- Firmware
- Bitcoin only
Can switch to standard firmware in the app, then you must import your Seed Phrase again
Connectivity
- USB-C
- Connects to a computer and draws power
- Bluetooth
- Connects to the OneKey app on your phone
Battery
- Battery
- None, runs on USB-C power
- With a phone
- Plug the USB-C cable into a charger or power bank, then connect to the app over Bluetooth
Backup and recovery
- Seed Phrase
- 12 or 24 words
Works with
- App
- OneKey on computer, mobile and browser extension
- Phone
- iOS 14 or later and Android 8 or later, over Bluetooth
- Computer
- Windows 10 or later, macOS 10.11 or later, Linux
Temperature
- In use
- -20 to 55°C
Tap a part on the image to see its specs.
Which OneKey is right for you
OneKey Pro 2
9,750 ฿The newest model: a sharp 3.54-inch AMOLED screen, thinner and lighter than the Pro, and a SeedCard for backing up your Seed Phrase over NFC.
View OneKey Pro 2OneKey Pro
7,990 ฿3.5-inch color touchscreen, fingerprint unlock, a camera for air-gapped QR signing, and wireless charging.
View OneKey ProOneKey Classic 1S
3,450 ฿Card-thin with 4 buttons, a battery and Bluetooth, so it works with your phone. An easy price to start with.
View OneKey Classic 1SOneKey Classic 1S Pure
2,990 ฿Like the Classic 1S but with no battery. It runs on USB-C power, so there is no battery to wear out.
View OneKey Classic 1S Pure- You are viewing
OneKey Classic 1S Pure BTC-Only
2,990 ฿The Pure with Bitcoin-only firmware, for people who hold only Bitcoin.
| OneKey Classic 1S Pure BTC-Only | OneKey Classic 1S Pure | |
|---|---|---|
| Price | 2,990 ฿ | 2,990 ฿ |
| Firmware | Bitcoin only | Many networks |
| Body | Dark see-through, orange Bitcoin mark | White |
| Hardware | The same | The same |
| Battery | None, runs on USB-C power | None, runs on USB-C power |
How to check your device is genuine
- Everything listed must be in the boxCompare with "What's in the box" above. If anything is missing or something unexpected is in the box, do not use the device and contact us right away.
- The brown outer box and plastic wrap are only shipping protectionThey are not anti-counterfeit marks, and older stock may not have them. Judge by the seals, the first power-on and the in-app check instead.
- The tamper seals on the box must be intactThe seals on the top and bottom of the box must not be torn or show signs of being peeled and stuck back. If damaged, do not set up the device and contact us right away.
- The holographic seal over the USB-C port must be intactThe device has a holographic sticker over its USB-C port. Peeling it leaves obvious marks. If it is damaged or looks re-applied, do not use the device.
- The device must show no signs of tamperingLook around the body, the edges, the seams and the USB-C port. There should be no pry marks, scratches, glue residue, or loose or badly fitted parts. If you find any of these, do not use the device and contact us right away.
- Every Seed Phrase sheet must be blankIf words are already written or printed on one, do not use the device under any circumstances.
- A new device must start at the setup screenOn first power-on you choose to create a new wallet and set your own PIN. If the device already has a PIN or a wallet, or someone gives you a PIN or Seed Phrase with it, do not use it.
- The device must start in Bitcoin-only modeWhen connected to the OneKey app, only the Bitcoin network appears.
- Let the OneKey app check the deviceOn first connection the app checks the device certificate and firmware. Confirm on the device and wait for "Verification successful". Download the app only from onekey.so, the App Store or Google Play.
- No need to open the device to check itChecking authenticity never requires opening the device. Opening it can damage it and void the warranty.
OneKey Classic 1S Pure BTC-Only FAQ
How much is the OneKey Classic 1S Pure BTC-Only?
2,990 ฿ at SIAMBC, an official OneKey reseller in Thailand.
How is BTC-Only different from the standard Pure?
The hardware is exactly the same. The difference is the firmware, which supports Bitcoin only. Less code means fewer unnecessary weak points, and the body is dark see-through with a Bitcoin mark.
Can I switch to standard firmware?
Yes, in the OneKey app under device management. It installs new firmware, so you must import your Seed Phrase again afterwards, and you can switch back the same way.
Does it work with iPhone?
Yes. It connects over Bluetooth to the OneKey app on an iPhone running iOS 14 or later. Because it has no battery, plug its USB-C cable into a charger or power bank so it has power while you use it.
How many words is the Seed Phrase?
Choose 12 or 24 words. The box includes 3 sheets to write them on.
Is it water resistant?
No water or dust rating is stated for this model, so keep it away from water.
Will SIAMBC or OneKey ever ask for my Seed Phrase?
Neither will ever ask, for any reason. Anyone who asks for your Seed Phrase or PIN is a scammer, whether they claim to be SIAMBC staff, use OneKey's name, or say it is for a warranty claim, identity check or firmware update.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Free shipping nationwide. Orders normally arrive within 1 to 2 business days, faster if you are in Bangkok.
Need it today? We can send by Grab or LINEMAN for same-day delivery in Bangkok. Call or message us on LINE to arrange it and pay by bank transfer.
You can also collect from our Bangkok store.
-
Customer Support
We answer in Thai and English, usually within a few hours on weekdays.
You set up the device yourself: you press every button and write down the recovery phrase on your own. SIAMBC never sees it and will never ask for it. Our step-by-step guides walk you through setup.
Stuck on a step? Ask us on LINE or at the shop.
-
Common questions
Which model should I choose? It depends on your phone. The Ledger Nano S Plus does not work with iPhone, and most Trezor models are view-only on iOS. Compare every model side by side.
Are your products genuine? Yes — new, sealed, genuine stock from authorized channels, from a physical shop in Bangkok you can walk into.
Will anyone ask for my recovery phrase? Never. Anyone who does is a scammer.
-
Contact Us
LINE is the fastest way to reach us — and how most of our customers ask questions before buying.
Phone: +66 82 554 6950
Email: order@siambc.com110/2 Thawi Watthana-Kanchanaphisek 3 Rd, Bangkok 10170
Monday to Saturday, 9:00 AM to 5:00 PM
Fast & Free shipping ส่งฟรี ส่งเร็ว
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OneKey Classic 1S PureSecurity chip
Four secure elements, EAL6+
Security chip
Four secure elements, EAL6+
Security chip
CC EAL6+
Authentication
PIN + fingerprint
Authentication
PIN + fingerprint
Authentication
PIN + passphrase
Open source
Yes. Device firmware is published
Open source
Yes. Device firmware is published
Open source
Yes. Device firmware is published
Passphrase support
Passphrase support
Passphrase support
Connects by
USB-C, Bluetooth, QR code, NFC
Connects by
USB-C, Bluetooth, QR code, NFC
Connects by
USB-C, Bluetooth
Works with iPhone
Works with iPhone
Works with iPhone
Works with Android
Works with Android
Works with Android
Works with computer
Works with computer
Works with computer
Air-gapped signing
Air-gapped signing
Air-gapped signing
Screen
3.5-inch color touchscreen, 480 x 800
Screen
3.54-inch color AMOLED touchscreen, 1024 x 604
Screen
1.54-inch mono OLED, 128 x 64
Touchscreen
Touchscreen
Touchscreen
Battery
Yes. Built-in rechargeable battery
Battery
Yes. Built-in rechargeable battery
Battery
No. Draws power over USB while connected
Wireless charging
Wireless charging
Wireless charging
Multi-chain
Multi-chain
Multi-chain
Four secure elements, 3.5-inch touchscreen, fingerprint
6.2 mm thin, 800-nit AMOLED screen, SeedCard backup over NFC
Battery-free, so there is nothing to charge and nothing to degrade
Before you buy
Are your products genuine?
Yes. Every device we sell is new, sealed, genuine stock from authorized channels. SIAMBC has been Thailand's hardware wallet specialist since 2016 and has a physical store in Bangkok you can walk into.
This matters more than it sounds. A hardware wallet bought from an unknown marketplace seller can arrive already set up by someone else, with a recovery phrase they know. It is the one purchase where the seller genuinely matters.
How long does delivery take?
Orders normally arrive within 1 to 2 business days, depending on where you are — faster if you are in Bangkok.
Need it today? We can send it by Grab or LINEMAN for same-day delivery. Call us or message us on LINE to arrange it, pay by bank transfer, and it goes out immediately.
You are also welcome to collect from our Bangkok store.
Can I collect from your store instead?
Yes. We are in Thawi Watthana, Bangkok, open Monday to Saturday, 9:00 AM to 5:00 PM. You are welcome to come in, see the devices in person and ask questions before you buy. We answer in Thai and English. Find us here.
What warranty do I get?
Hardware wallets carry a 1-year warranty, claimed directly through us, with no waiting in an overseas support queue.
If a device is faulty out of the box, we replace it with a new one straight away. No forms, no waiting on the manufacturer.
The exception is the CryptoSafe range of steel recovery phrase backups: these products carry no warranty and cannot be returned or exchanged, as stated on their product pages.
How can I pay?
Credit card, bank transfer, or cash on delivery. You can also pay in person at our Bangkok store.
Can I set it up myself?
Yes, and you should do every step yourself. It takes a few minutes: you press every button on the device, create the wallet and write down your recovery phrase on your own.
Our step-by-step guides walk you through each step. If you get stuck, our team can answer on LINE or by phone, without ever seeing or asking for your recovery phrase.
Which model should I choose?
It depends on the phone you use and what you are protecting. The most common mistake is buying a wallet that does not work with your phone — the Ledger Nano S Plus does not support iPhone at all, and most Trezor models are view-only on iOS.
Compare every model side by side, or ask us. We will tell you honestly which one fits.
What happens if I lose my hardware wallet?
Nothing, as long as you still have your recovery phrase. The device only holds the keys — buy any compatible wallet, enter your phrase, and your crypto is back.
The real risk is losing the phrase itself. That is why we suggest keeping it on steel rather than the paper card in the box. Paper burns, water ruins it, and in Thailand termites eat it.
Will anyone ever ask for my recovery phrase?
No. Anyone who asks for it is a scammer, without exception. Neither SIAMBC nor any manufacturer will ever ask for your recovery phrase — not for a warranty claim, not for identity verification, not for a firmware update. Whoever has those words owns your crypto, and it can never be recovered.
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