Support multiple users to share the same unlocking permissions.Support to check the lock record at any time.Replaceable battery, low power consumption and long standby time.Support for close range automatic lock.No mechanical key, supporting trigger Bluetooth signal to unlock to reduce power consumption.Apply to Sharing Cabinet, Storage Cabinet, Drawer, Wardrobe, Showcase, Door Lock, Data Cabinet, File Box, etc.:Working voltage: 2.5-4.2VCommunication mode: BluetoothUnlocking mode: mobile APP Bluetooth modeUnlock time: about 2 secondsWaterproof: no supportSupport equipment: for IOS/ Android 4.3 or morePower supply mode: 800 MaCharging mode: replaceable battery (Built-in)Duration: 1 years (Ten times a day, 1000 times more)Colour: blackMaterial: metal + plasticSize: 70*40*20mmPackage Contents:1 * (Battery Built In)Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.