describe: Remote control size: 285811mm (approx.). Total weight: white box, 113 grams. Colour: Black. Maximum range 20 meters, 30 meters, 60 meters Sound level 113 dB Does it include a remote control? Yes Multipurpose: Effectively prevents bicycle theft. Vibration triggered alarms are suitable for bicycles, motorcycles, e-bikes, e-scooters and more. 7-Level Adjustable Sensitivity: 7-Level Adjustable Sensitivity, from light touch to push or beat, you can easily adjust it according to your needs. Wireless remote control, easy to use, remote control range up to 20m. Adjustable volume and SOS function: 113dB sound alarm, 96dB adjustable volume, 105dB to 113dB, effectively deter thieves; when an accident occurs, it can send out an SOS signal to help you. Easy to install and waterproof: Easy to install, there are two installation methods: double-sided stickers or tied with straps. IP55 waterproof, suitable for outdoor use. Beautiful design: Item dimensions: 9.4 x 4.1 x 2 cm. Six ringtones can be operated through the remote control to facilitate finding the vehicle location. Battery: The host has 3 AAA batteries. 1 x 27 A battery for remote control. Package contents: 1 piece alarm