Features: 1. Smart fingerprint unlock, one touch to open 2. Support 360-degree non-directional fingerprint recognition 3. The standby time can be up to half a year, and the red indicator light will flash quickly to remind when the battery is low 4. Splash-proof, more durable 5. Wide application, suitable for suitcases, drawers, backpacks, bookcases, storage boxes, etc. 6. Mini, compact and portable Specifications: 1. Diameter of the circular fingerprint sensor: 12mm 2. Shell material: aluminum/zinc alloy 3. Lock beam material: stainless steel 4. Size: 50.4x29x13mm 5. Weight: 35g 6. Charging: Micro USB DC 5V 7. Battery: 3.7V 60mAh lithium battery 8. Standby time: half a year (can be unlocked about 800 times) 9. Operating temperature: -10-70 degrees Celsius 10. Number of fingerprints stored: 20 PCS 11. Recognition time: less than 0.5 seconds

http://olla.gr/x007-micro-usb-charging-mini-metal-fingerprint-padlock-small-drawer-lock-silver/