【Christmas Gift】【Long Run Time】: MEGAFEIS Smart padlocks have lower power consumption and longer standby time. The USB rechargeable 150MAH lithium battery can support up to 6-month of standby time or 2-month (2500 times of unlock) in one charge. When out of battery, the smart lock will remain locked, simply connect to a USB power supply and recover. | 【Rugged Construction】: The padlock beam is made of stainless steel for excellent tamper resistance. IP65 weatherproof protects against dust and water. Kindly attention: The padlock is not recommended for extended outdoor use in rain or snow. | 【Bluetooth Function】: Connect smart padlock to free mobile app by Bluetooth. You can use the app to register fingerprints, unlock, set authorized user, check the last 1000 unlock activities, etc. | 【Lightweight, Portable & Wide Uses】: Gym lock Compact size to be carried anywhere you go. MEGAFEIS Fingerprint Bluetooth padlock is suitable both indoor and outdoor for gym, school, office, door, gate, fence, garage, warehouse, cabinet, shed, suitcase, handbag, luggage, bike, etc. | 【Smart, Safe and Convenient】【School Essential】: Say goodbye to cumbersome password combinations. You can unlock smart padlock with your finger only for a split second. Don’t worrying about losing key or forgetting password. MEGAFEIS Fingerprint padlock can register up to 15 sets of fingerprints. You can also authorize and share the lock to your family/friend to use