Wireless remote control with 4 buttons allows the rider to operate the bicycle tail light in different modes. The handlebar-mounted remote control is easy to use while riding, making it ideal for mountain bikes and road bikes. USB rechargeable with a built-in 700mAh battery. Includes a charging cable compatible with computers, power banks, or any device with a USB port. Charging time is approximately 2-3 hours. Offers three lighting modes: Flash, Medium Flash, and Continuous Light. Features anti-theft functionality with an alarm that activates when motion or vibration is detected, helping to deter potential thieves and alert the rider. The system is compact and portable, allowing the remote to be mounted on the bike or carried in a pocket. Easy to install with a convenient clip that attaches to bicycle handlebars. Can help locate your bike in a parking area by triggering the alarm from the remote control. Product Features: 100% brand new and high quality. Easy to install and use. Vibration sensor activates the alarm when movement is detected. Helps protect your bike from unauthorized access. Remote control enables convenient operation. Clip-on design allows quick mounting on handlebars. Durable plastic housing built for long-term use. Effective signal range of 10-50 meters in open area, capable of functioning through walls. Specifications: Battery capacity: 700mAh USB-rechargeable lithium battery (3.7V) Charging time: 2-3 hours; standby time up to 60 days Light source: COB bright red LED Remote control functions: - A (red button): Flash mode switch - B (blue button): Reset button to restore light operation if needed Remote control battery: 12V / 27A alkaline battery Alarm volume: 105-120dB Remote control range: 10-50m (open area), works through walls Compatibility: Fits most bicycles; designed for saddles with 5-7cm spacing Material: Plastic Color: Black Quantity: 1 set Package Includes: 1 x Alarm system set