The tail light features a one-touch switch with four different lighting modes depending on your preference: full brightness, half brightness, fast flashing, and slow flashing. The tail light can be charged via USB cable using computers, chargers, or portable power sources. With a convenient one-touch dismount button, you can easily slide the light on and off the mount without removing the entire mounting bracket. The silicone mount strap is designed with four openings that tightly fit around most handlebar and post sizes. The tail light can be attached to your belt, running gear, backpack, dog, bicycle, helmet, skateboard, scooter, stroller, wheelchair, or other suitable locations. Material: Plastic. Color: Red + White. Package contents: 8 x Tail Light. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item to appear slightly different from the real thing. The measurement allows an error of +/- 1-3 cm.