This product is a practical warning light, suitable for daily riding, night walking and other occasions. The warning light is small and portable, has good functionality, has a good lighting effect, and has a strong warning function. You can use it as a self-propelled taillight to protect your riding safety and make your activities more enjoyable. Features -Color: Black, Red - Material:Aluminum Alloy - Size: About11.00 X 4.00 X 2.60cm/4.32 X 1.57 X 1.02inch -This taillight can well protect your riding safety and have a good warning effect. -The product can play a warning role as well as a good lighting role. -The small and exquisite taillights are easy to carry and store, and your use will be very convenient.