This is a which is made of materials for long time use. Never worry about losing your key or forgot passwords. Forget the cumbersome numbers, your is your key. This fingerprint padlock is very quickly to unlock. Feature - Color: Black. - Material: Zinc Alloy and Stainless Steel. - Size: About 7.8 x 4 x 1.3cm. - Sensor pixels: 88x112 - Standby : <10μA - Sensor resolution: 508 DPI - Fingerprint comparison speed: 1: 1 < / fingerprint - Working (fingerprint comparison): <50mA - Overall response time: 0.7s - Working ( rotation): normal working range <200mA, peak <1A - Misunderstanding rate: <0.001% - True rejection rate: <0.01% - Relative humidity: 40% -90% (non-condensing) - Fingerprint capacity: 10 - D (contact discharge): 8K V - ES D (air discharge): 15K V - Battery capacity: 3.7V - Operating temperature: - degree centigrade-7 0 degree centigrade - Operating voltage: 3.3V - unlock, this fingerprint padlock is very quickly to unlock. Support 360° arbitrary direction press type fingerprint recognition. - Easy Operation: no need any tools, you can add or delete fingerprints easily by following the instructions of the user manual. - Featuring USB rechargeable function, large power capacity for long Standby time. - Easy to carry: Its compact size enables you to easily place it in your pocket and carry around. - Application: Suitable for house door, backpack, suitcase, warehouse, , cabinet, office and more. Package list: 1 x Fingerprint Padlock