BT Smart Keyless U-Type Lock APP / Keyboard Password Bicycles Motorcycles Lock

Features:Widely Used--Big U-type lock, suitable for bicycles, motorbikes, warehouse doors, glass doors, fences and much more.Free APP Unlock--BT connection, keyless convenience helps you get rid of worrying about lost keys or forgotten combinations (suitable for Android iOS system).3 Unlocking Methods--APP Automatically Unlock / APP Connected to Device to Unlock / Keyboard Unlock.High Security--6-digit password, thousands of combinations. After unlocking the correct password, if the lock shackle is not removed, the device will automatically lock after 5 seconds. If the keyboard password are entered incorrectly 5 times, the device will have a lock time of 3 minutes , and the password cannot be entered again with 3 minutes.Superior Durability--The lock body is made of aluminum alloy and zinc alloy, and the lock beam is made of alloy steel and wrapped with PVC leather tube sheath. Heavy duty and excellent quality. IP55 waterproof, rainproof, cutting-resistant, corrosion-resistant.APP Key Sharing--Each user can connect multiple locks and each lock can be controlled by multiple users as well. Easy to share the device key by sending the QR code.Emergency Power Supply--If the battery is not replaced in time, the padlock can't be opened. Use the emergency interface for charging and unlocking.Battery Operated--Powered by 2 * AAA batteries, averagely, to lock or unlock it 10 times per day, can be used over 300 days. Very saving energy.