4-1 Multifunctional Design: bike light set is compatible with 4 practical functions-bicycle headlight, mobile phone holder, charging treasure, bicycle horn. The convenient and versatile design makes you more convenient and safe during cycing. 3 LED Lamp Beads,bicycle lamp adopts 3 bright lamp beads design, more full brightness. There are 3 light modes-strong light, low light, flashing,it can that you ride more safely at night. Easy Installation: The Headlight is equipped with a mounting bracket that can be easily fixed to the handlebar. The silicone mount strap for Headlight and Taillight are designed with four openings that tightly fit around most size seat posts. Both Headlight and Taillight can be easily loosen and fasten, and no tools are required. Bike Light Set 3 Light Modes 4000mAh Front and Rear USB Rechargeable Waterproof Front Headlight with Phone Holder, 5 Modes Speaker Adjustable width of bicycle phone mount makes it fit most phones up to 6.3 inch. 2.16inch-3.15inch/55-80mm wide clamp can hold Fits handlebars from 0.86inch to 1.25inch. (STABLE ClAMP please order blue model/Please tighten the screw after attaching to handlebars) colour: blue Material: ABS plastic size: 8.2x12.5cm Package Contents: 1 x Car light phone holder Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.