This fingerprint lock features lower power and ling standby time. You don`t have to worry about charging, it supports Micro USB charger and the lithium battery which is in-built has 3.7 voltages. The smart padlock can be unlocked under emergency situation---It can be unlocked by fingerprint directly when charging. It`s relatively light, weighing only 58 grams. If you are looking for the most secure padlock for your suitcase, house door, office, warehouse, cabinet or backpack then this what you need. - Keyless lock: Your finger is your key. Provide a safe and private way for unlock and identity verify,the smart lock can record up to 10 set different fingerprints - Waterpoof lock: With IPS65 waterproof standard,the product can be protected from the water and dust.Suitable for both indoor and outdoor use. - Rechargeable lock: With the feature of lower power and long standby time, 80mah Lithium battery can support 6 months standby time and can be opened up to 1000 times. - Easy to use lock: No keys, no complicated APP access, simple fingerprint recording and deletion, lightweight and easy to carry, you can easily place it in your pocket. - Wide applicable lock: Small and lightweight, only 56g. Suitable for gym lockers, suitcases, golf bags, handbags, school lockers, furniture, wardrobes, bike and also more convenient for blind people. Specifications: Support 360 degree angle fingerprint recognize 72*64 Sensor Working temperatures:-15℃-60℃ Resolution: 508DPI ESD: +/-12kV air, +/-8kV contact FRR: