1USB Rechargeable: Bike alarm is powered by built in rechargeable 4.2V 700mAh lithium battery that can be charged via the DC5V power adapter and USB C charging cable. A full charge of about 3 hours can work for about 1 to 3 months (depending on the alarm frequency). 2Adjustable Volume And Sensitivity: Loud alarm up to 110dB effectively scares away potential thieves. 3 levels of adjustable volume, don't worry about it being too loud or too low. 7 levels of adjustable sensitivity, easy to set according to your needs. 33 Mounting Methods: Equipped with mounting bracket, cable ties and double sided sticker, providing 3 mounting methods. Bracket mounting makes it easier to change the mounting position. Cable ties and double sided stickers are suitable for irregular mounting objects. 4Easy To Use: This bike anti theft alarm supports remote wireless control, powerful wireless range up to 260 feet. Vehicle search function, easy to find your vehicle, 3 ringtones for you to choose. IP65 waterproof, suitable for outdoor use. 5Multipurpose: Vibration triggered bike alarm with low battery indicator, add up to 8 remotes and lots of alarms for bikes, electric bikes, motorcycles, scooters, cars, trailers, luggage, doors, window and more.