[All-Round Compatibility] X-SEED PLUS provides up to 24 recovery words per sheet for software or hardware wallets that use standard 12, 18, or 24 recovery words. [Unhackable] The seed is physically backed up offline, off the radar, and kept out of reach of hackers and attackers on the internet. [Fireproof and Waterproof] The 1.5mm ultra-durable stainless steel sheet can withstand temperatures up to 3,400°F/1454°C. The stamped or engraved characters will not be scratched or washed away by water. - Brand: X-SEED - Product Name: X-SEED PLUS - Set Contents: Business card organizing system, stamp, card case, pen - Design Award: EUROPEAN PRODUCT DESIGN AWARD winner - Features: Stamp-style business card organization, compact storage Thank you for viewing.