Specifications: High brightness COB lamp beads have anti glare design, comprehensively improving brightness, long endurance, long life, and sufficient brightness. Five lighting modes can be switched at will (first gear headlights+warning lights, second gear fog lights+warning lights, third gear all lights on at medium brightness, fourth gear all lights on at high brightness, and fifth gear all lights flashing). 130 dB high, with five sound modes, the speaker sound effect can be switched within one second, and a loud sound can provide better warning effects. The anti-theft vehicle has added an alarm function. Press and hold the switch for three seconds to turn on the anti-theft mode. After 2 seconds, the system enters the anti-theft state. When someone touches the car, an alarm will sound. USB fast charging features over charge and over discharge protection designs. Trade name: bicycle lamp Material: ABS, GPPS Speedometer type Power supply: 1200 mAh battery (included) Features: 5 lighting modes, durable and convenient Dimensions: 10.2 cm x 5 cm x 2.5 cm/4.02 inch x 1.97 inch x 0.98 inch (approximately) Notes: Due to differences in lighting and screen settings& 39; The color of s may be slightly different from the image. Due to differences in manual measurements, please allow for minor dimensional differences. Package includes: Speedometer type 1 bicycle lamp 1 x base 1 speaker controller 1 charging cable 1 sensor 1 cable tie 1 magnet transmitter