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Signing connectivity

Hardware wallets with signing connectivity microSD

12 models from 7 brands, 2020–2026 — compared by specs and score.

Models12
Brands7
Typical price€70–230
Top rated

Best with microSD

Blockstream Jade Plus#1
Blockstream2025
Jade Plus
Air-gapped signingOpen-source firmwareUSB-C, Bluetooth, QR code, microSD
approx. price≈ €140
9.4
Foundation Passport Prime#2
Foundation2025
Passport Prime
Secure Element chipAir-gapped signingOpen-source firmwareBluetooth, QR code, microSD
approx. price≈ €320
9.3
Specter Shield#3
Specter2020
Shield
Secure Element chipAir-gapped signingOpen-source firmwareUSB, QR code, microSD
approx. price≈ €450
9.2
Foundation Passport Core#4
Foundation2022
Passport Core
Secure Element chipAir-gapped signingOpen-source firmwareQR code, microSD
approx. price≈ €180
8.9

All models with microSD

12
1 Blockstream Jade Plus
Blockstream · 2025
Jade Plus
Air-gapped signingOpen-source firmwareUSB-C, Bluetooth, QR code, microSD
9.4
2 Foundation Passport Prime
Foundation · 2025
Passport Prime
Secure Element chipAir-gapped signingOpen-source firmwareBluetooth, QR code, microSD
9.3
3 Specter Shield
Specter · 2020
Shield
Secure Element chipAir-gapped signingOpen-source firmwareUSB, QR code, microSD
9.2
4 Foundation Passport Core
Foundation · 2022
Passport Core
Secure Element chipAir-gapped signingOpen-source firmwareQR code, microSD
8.9
5 Keystone 3 Pro
Keystone · 2023
3 Pro
Secure Element chipAir-gapped signingOpen-source firmwareQR code, microSD
8.5
6 Specter Shield Lite
Specter · 2020
Shield Lite
Secure Element chipAir-gapped signingOpen-source firmwareUSB, QR code, microSD
8.2
7 Coinkite Coldcard Q
Coinkite · 2024
Coldcard Q
Secure Element chipAir-gapped signingUSB-C, NFC, QR code, microSD
7.9
8 Krux DIY
Krux · 2022
DIY
Air-gapped signingOpen-source firmwareQR code, microSD
7.1
9 Coinkite Coldcard Mk5
Coinkite · 2026
Coldcard Mk5
Secure Element chipAir-gapped signingUSB-C, NFC, microSD
6.9
10 Coinkite Coldcard Mk4
Coinkite · 2022
Coldcard Mk4
Secure Element chipAir-gapped signingUSB-C, NFC, microSD
6.3
11 Specter DIY
Specter · 2020
DIY
Air-gapped signingOpen-source firmwareUSB, QR code, microSD
6.1
12 SeedSigner DIY
SeedSigner · 2021
DIY
Air-gapped signingOpen-source firmwareQR code, microSD
4.0
To compare: 0up to 4 models
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