Features: ANTI-THEFT BIKE ALARM LIGHT. The smart bike alarm can make loud sound (110 decibels) to draw people's attention and deter the thieves. Distance in the open area, the remote control operating distance up to 1.8m (six feet), LIGHT MODES & ADJUSTABLE BRIGHTNESS. This bike alarm tail light have 4 light modes: Slow Flash/Breathing Flash/Fast Flash/Steady On. Using remote control to change different modes that you like. ELECTRIC BIKE FINDER. With this smart anti-theft bike alarm, you can easily find your bike location through light or sound. TIP: It does not contains a GPS tracker. EASY TO USE AND INSTALL. Simple installation. The bicycles light is more bright and highly visible from a distance, really catch attention to ensure your safety. The brake sensor function works on all the light modes. USB RECHARGEABLE. Built-in 700 mAh lithium battery, USB rechargeable. Once fully charged, working-time up to one to three month; standby about six months. WIDE APPLICATION. High brightness; IPX5 Waterproof. Suitable for ebike, road bike, mountain bike, motorcycle, and more. Specifications: Color: Black Type: With 1 Remote; With 2 Remotes Size: Approx. 14.5x10x4cm/5.7x3.93x1.57in Material: ABS-Plastic Weight: Approx. 135-150g Package Includes: 1 Set Bike Alarm Light note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.