Protect Your Recovery Phrase!
CoolKey
Prices shown in USD; charged in TWD (New Taiwan Dollars) at checkout. Local taxes or customs fees may apply.
Meet CoolKey by CoolWallet—the ultimate fire- and water-resistant steel wallet for securing your crypto. This updated version is fully compatible with all BIP39 wallets and features a more ergonomic design, making it easy to eliminate weak points in your crypto backup.
Pairs well with
CoolKey
Unmatched Durability
CoolKey’s 304‑grade stainless steel is fire-resistant (up to 1450 °C), water-resistant and corrosion‑proof, offering rock‑solid protection for your crypto.
Wide Compatibility
CoolKey increases security with five‑letter encoding, working with all BIP39 wallets for reliable storage of your recovery phrase.
User-Friendly Design
CoolKey features no spring locks and smooth edges to prevent scrapes. It comes with two metal plates and a screwdriver for easy, secure assembly.
Product Upgrade: From Billfodl to CoolKey
Improved durability and performance with a friendlier design.
CoolWallet logo added
Symbolizes reliability and community—connecting you with secure, stylish crypto storage.
Smoothed edges
Prevents scrapes for safer handling.
Includes screwdriver
Provides everything you need for an easy setup straight out of the box.
Spring lock removed
Simplifies setup and reduces scrape risks.
Secret-Key Backup Comparison
CoolKey
Quick Setup
Reusable
Scrape-resistant
Water-resistant
Fire-resistant
Corrosion-resistant
BillFodl
Quick Setup
Reusable
Water-resistant
Fire-resistant
Corrosion-resistant
Paper
Quick Setup
Product details
Box Content
Laser‑cut stainless‑steel chassis; laser‑engraved stainless‑steel plates
Technical Specifications
Dimensions
124 × 60 × 6 mm (4.9 × 2.4 × 0.2 in)
Weight
Net: 0.26 kg / Gross: 0.57 kg
Box Size
161.8 × 122.5 × 29.6 mm (6.3 × 4.8 × 1.2 in)
Materials
304‑grade stainless steel
Recovery Phrase Support
24 words (12 per side)