USB Rechargeable, No Battery Replacement Required - The bicycle alarm is powered by a built-in rechargeable 4.2V 700mAh lithium battery, which can be charged via a DC5V power adapter. The package includes a USB-C charging cable. No need to replace the battery, helping to save money. The bicycle alarm features version 4 energy-saving technology and can operate for 1 to 3 months on a full charge, depending on alarm usage frequency. 3 Mounting Methods for More Uses - Includes mounting brackets, cable ties, and double-sided tape for three different installation options. Bracket installation allows for easy repositioning. Zip ties and double-sided tape are ideal for securing to irregularly shaped items. Simple to install and use. An essential anti-theft alarm for bicycle, e-bike, and motorcycle owners. Adjustable Volume and Adjustable Sensitivity - Loud alarm output up to 110 decibels effectively deters potential thieves and provides peace of mind. Well-constructed bike siren with reliable performance. Features 3-level adjustable volume to suit different environments. 7-level adjustable sensitivity allows customization from light touch to strong impact detection, easily set based on user preferences. Remote Control - Wireless remote control with an extended range of up to 164 to 260 feet. Includes vehicle search function to help locate your bike in a parking area. Offers 3 selectable alert tones. IP54 rated for water resistance, suitable for outdoor use. Multi-Functional Alarm - Vibration-triggered alarm system, a useful anti-theft solution for bicycles, e-bikes, motorcycles, mopeds, scooters, cars, trailers, luggage, doors, and windows. Additional features include charging level indicator, low battery warning, long battery life, and support for adding extra alarms and remotes (Note: This alarm kit is not compatible with B0734QN8KR/B01HUSRP7R). Color: Black Material: Plastic Package Contents: 1 x Bike Alarm (including battery) 1 x Remote (including battery) 1 x USB Type-C Cable (charger adapter not included) 1 x Mounting Bracket Accessories 1 x No-mats 2 x Cable Ties Only the items listed above are included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.