CoolWalletCard & ring wallet
CoolWallet S
CoolWallet S is a card & ring wallet released in January 2018. Key specs: secure element chip, secure element certification EAL5+, signing connectivity USB, Bluetooth, screen size 1.03″.
3.8Score
Security2.4
Open source5.3
Bitcoin features2.4
Ease of use4.8
Connectivity2.4
price range€80–105Reference price converted from USD
- Released
- January 2018
- Brand
CoolWallet- Popularity
- #83 of 141
YesSecure Element chip
EAL5+Secure Element certification
NoOpen-source firmware
NoAir-gapped signing
USB, BluetoothSigning connectivity
1.03″Screen size
YesBuilt-in battery
6 gWeight
Spec guide
How it ranks among card & ring wallets
Compared with every model of this kind in the catalog.
Specifications
Full specifications
Security
- Secure Element chip
- Yes
- Air-gapped signing
- No
- 100% air-gapped
- No
- Supply-chain & tamper protection
- Yes
- Anti-klepto (anti-exfil) signing
- No
Firmware & open source
- Open-source firmware
- No
- Source code available
- No
- Reproducible builds
- No
- Upgradable firmware
- Yes
- Firmware update via
- USB
- Bitcoin-only firmware / edition
- No
Device lock
- PIN lock
- Yes
- PIN entered on the device
- No
- Duress PIN / decoy wallet
- No
- Brick / wipe PIN
- No
- Wipe after failed attempts
- No
- Time-delayed unlock
- No
- Anti-phishing words
- No
Keys & backup
- BIP39 passphrase
- No
- Shamir backup (SLIP-39)
- No
- Seed XOR
- No
- BIP85 child seeds
- No
- 24-word seed
- Yes
- SeedQR backup
- No
- microSD backup
- No
- NFC backup card
- No
- User-added entropy (dice)
- No
- Stateless use (no stored keys)
- No
- Multiple seeds on one device
- No
Bitcoin features
- Multisig
- No
- Taproot
- No
- Miniscript
- No
- Message signing
- No
- Coin control
- No
- Own node connection
- No
- Tor support
- No
- Replace-by-fee
- No
- Silent Payments
- No
- Spending limits
- No
- Testnet
- No
Supported assets
- Altcoins & tokens
- Yes
- Bitcoin only
- No
Connectivity
- USB
- Yes
- USB-C
- No
- Bluetooth
- Yes
- NFC
- No
- QR code camera
- No
- Animated QR (UR)
- No
- microSD signing
- No
Screen & input
- Screen
- Yes
- Screen size
- 1.03″
- Screen type
- E-Ink
- Touchscreen
- No
- Colour screen
- No
- Gorilla Glass
- No
- Controls
- Buttons
- QWERTY keyboard
- No
Battery & power
- Built-in battery
- Yes
- Battery capacity
- 15 mAh
- Removable battery
- No
- Wireless charging
- No
Design
- Weight
- 6 g
- Length
- 85.6 mm
- Width
- 54 mm
- Thickness
- 0.8 mm
- Materials
- Plastic & Metal
- Water / dust resistance
- Yes
- Several colours available
- No
- Warranty (months)
- 12
- Assembled in
- Taiwan
- DIY build possible
- No
Apps
- Official apps
- Android, iOS
- Desktop app
- No
- Mobile app
- Yes
- Compatible third-party wallets
- 0
Other features
- FIDO2 / U2F security key
- No
- Password manager
- No
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
In collections
Card & ring wallets: Secure Element chip11Hardware wallets — Secure Element certification: EAL5+ + Bluetooth11Hardware wallets: Secure Element chip + built-in battery31Hardware wallets — Secure Element certification: EAL5+18Hardware wallets: Bluetooth25Hardware wallets: Built-in battery37Hardware wallets: Secure Element chip54
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