safe to remind passersby, night riding. The tail light is made of waterproof material to safe use in . Remote control indicator light: and bicycle tail light, which can be installed on all bicycles, children's bicycles, and adult bicycles. It can also be used as helmet light, backpack light, warning light, etc. Colour:Black Material:ABS Package Contents: 1 x Wireless Bicycle Alarm Tail Light 1 x Remote control 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.