The tail light has a one-touch switch with four different lighting modes depending on your preference: Includes full brightness, half brightness, fast flashing and slow flashing. The tail light can be charged with USB cable via computers, chargers or portable power banks. With a convenient one-touch disassembly button, you just need to slide the light on and off the mount without removing the entire mounting bracket; The silicone tail light attachment strap is designed with four openings that fit tightly around most sizes of handlebars and seat posts. The tail light can be attached to your belt, running clothes, backpack, dog collar, bicycle, helmet, skateboard, scooter, stroller, wheelchair or anywhere you can think of. Material: Plastic Color: Red+White Package Contents: 8 x Tail Light 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 allowed measurement error is +/- 1-3 cm.