Lightweight and compact design, convenient for storage or carrying. Simple operation and easy installation. This device helps to protect your bike effectively. Features: 1. High-sensitivity deployment probe. 2. Simple, effective, and convenient installation. 3. Effective remote control and alarm sensor up to 10 meters indoors and 30 meters in open areas. 4. Press the red button to arm the alarm, which will beep; press the gray button to disarm, which will beep twice. 5. Vibration sensing alarm that lasts for 20 seconds with a loud sound. 6. Comes with a keychain for easy carrying of the remote control. Specifications: Material: ABS Color: Black Package weight: Approximately 100g Product name: Remote-controlled bicycle alarm, anti-theft device Power supply: 9V battery (not included) Sound level: 105 dB Product size: 38*9.8*6cm Remote control size: 5.3*3.8*1.3cm Warm reminder: The package does not include batteries. The remote control contains electronic components. Note: This product is waterproof when properly installed, but it should not be submerged in water.