Enhanced Safety Features: Equipped with a high-visibility LED lantern and light, this bicycle rear lamp ensures you are seen on the road, enhancing safety during rides. The light activates automatically when you , alerting following traffic. Security Alarm System: Protect your bike from theft with the integrated burglary alarm. The alarm is triggered by movement, deterring potential thieves and alerting you to unauthorized access. Convenient Remote Control: Manage your bike's rear lamp functions remotely with the included wireless control. This feature allows you to activate the light, alarm, and even use the bike finder function to locate your bicycle in crowded areas. USB Rechargeable: Forget about replacing batteries. This lamp is USB rechargeable, providing long-lasting light and security features on a single charge. Multi-functional: The A8 Pro also includes a horn bell to alert pedestrians and other cyclists, making it an accessory for every looking for convenience and enhanced security. Host battery: 800mAh Remote control battery: 12V 27A alkaline battery, replaceable Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: As Shown Material: plastic Package Contents: 1 x LED Warning Tail Light Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.