Keyless, password and remote to lock and unlock.Vibrating or removing the lock activates alarm.Cutting cable or removing the battery cover activates alarm.Three times wrong code activates alarm.Alarm sound up to 110dB.Programmable 4 digital password, up to 256 kinds of passwords.Remote control to lock / unlock / find vehicle / pair, LED indication.3 x AAA alkaline batteries operation(not included) and low batteryIP55 waterproof.One remote can control multiple locks or similar remote alarms at the same time.One lock can pair with 8 remotes at most.3 x AAA batteries (not included) for alarm lock, life lasts for 3 months.1 x CR2032 batteries(not included) for remote, life more than 3 years.Remote-controlled distance: equal 40mCable specification: length 80cm (40cm/120cm) / diameter:10mmChain specification: length 80cm (40cm/100cm) / diameter:6mmWorking temperature:-10-+60Storage temperature:-20-+80Colour:BlackMaterial:Plastic+SteelSize:92x55x34mmPackage Contents:2 * Bike Lock2 * Remote Control1 * English instruction manualOnly the above package content, other products are not included.Note: Light reflection 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.