Features1Built in Speaker Function: Convenient and easy to use, 120 high decibel horn effectively warns passing pedestrians and vehicles. 2Angle Adjustable: 120 Degree adjustable lamp head, the viewing angle can be adjusted at will, lamp head angle can be adjusted up and down. 3Do Not Block Screen: With the function of mobile phone holder, it is convenient to look at the mobile phone during the riding process, which is safe. 4Multiple Gear Switching: Three lighting modes can be switched freely, one key to open and close, switch three light modes: strong lightweak lightflash. 5Strong Compatibility: Bicycle headlight is charged through the USB interface, compatible with computers, mobile phones, power banks, etc., which is convenient and easy to use.SpecificationItem Type: Bicycle LightColor: BlackMaterial: PCWeight: Approx.286g/10.1ozLamp Beads: T6 Lamp BeadsSpeaker Decibel: About 120dbBattery: Polymer Lithium Battery 2400mAh with Built in BatteryPackage List1 x Bicycle Light1 x USB Data Cable1 x Mounting Screw1 x Mounting Bracket2 x Gasket