Waterproof IP65 Bike Alarm 110dB Loud Rechargeable Anti Theft Vibration Motion Detector with Wireless Remote Features： 1、USB 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). 2、ADJUSTABLE 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. 3、3 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. 4、EASY 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. 5、MULTIPURPOSE: 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. Specification： Item Type: Bike Alarm Material: PC Alarm Noise: 110dB Waterproof: IP65 Remote Range: Up to 260ft in the Open Alarm Battery: 4.2V 700mAh Lithium Battery (Included) Remote Control Battery: 27A (12V) Alkaline Battery (Included) Remote Control Battery Capacity: 25mAh Rechargeability: Alarm Battery Only (USB Type C Rechargeable) Charging Time: About 3 Hours for Full Charge Alarm Operating Time: About 1 to 3 Months. Standby Time: About 6 Months Operating Frequency: 433.92MHz Operating Temperature: -40 to +70℃, Storage Temperature: -40 to +70℃ Working Humidity: <80% Package List： 1 x Bike?Alarm 1 x Remote Control?? 1 x Host Bracket A? ? ? 1 x Host Bracket B? ? 2 x Host Bracket Anti Slip Silicone 2 x Tie Strap 1 x Tie Strap Fixing Base?? 1 x Charging Cable? ?? 1 x Instruction Manual?? 1 x Accessory Kit (1 x Hex Cross Wrench, 2 x Stainless Steel Screw, 4 x Stainless Steel Nut, 2 x Fixing Cross Screws, 1 x Double Sided Sticker)