BT connection, can be easily opened with one button. tego it's a shelf, nightstand or filing cabinet, it fits perfectly. Features: Protect important documents. Keyless is more convenient, you can also authorize keys to increase efficiency. Small remote authorization key, more efficient work and life. Set the authorization period, you can also view the lock opening record and withdraw the right to use the key at any time. Set the auto-lock function in the app. When the auto-lock feature is enabled, the unlocking language will automatically lengthen. Ultra low power consumption design, unlock the remaining power display, automatic reminder of low power consumption. It can be set to turn on automatically when the power is too low to stop the failure of downloading important files. Simple installation, applicable to all types of drawers with materials, does not affect the beauty of furniture. Technical data: Colour white Material: ABS PC Wireless connection: BT4.0 Unlocking distance: 10 m Unlocking speed: 1-2s Battery B: 2 * AAA battery Package Weight: 160 g / 5,64 oz Package Size: 150*70*50 mm/5,9*2,75*1,96 inch List of packages: 1 * Lock 1 * locking hitch 1 * User Manual 1 * Tape 1 * separation blade 1 * Screw Fittings