4-1 Multi-Function Design: The bicycle light set is compatible with 4 practical functions - bicycle headlight, mobile phone holder, charging base, bicycle horn. Comfortable and versatile design makes your riding more comfortable and safer. 3 LED lamp beads design: KindCock bicycle light adopts 3 bright beads design with higher brightness. There are 3 light modes - high light, low light and flashing, making your night riding safer. Easy to install: The headlight comes with a mounting bracket and can be easily installed on the handlebar. The silicone mounting straps for the headlight and taillight are designed with four openings to fit most seatposts. Both the headlight and taillight can be easily removed and installed without any tools. Bicycle Light Set 3 Light Modes 4000mAh Front and Rear USB Rechargeable Waterproof Headlight with Phone Holder, 5 Modes Speaker The adjustable width of the bicycle phone holder makes it suitable for most mobile phones under 6.3 inches. 2.16"-3.15"/55-80mm wide clamps accommodate handlebars from 0.86" to 1.25". (Order blue model for stabilizing clamp/tighten screws after installation to handlebar) Color: Blue Material: ABS plastic Size: 8.2x12.5 cm Package Contents: 1 x Headlight Holder Only the above package contents are included, no other products are included. Note: Lighting and different displays may cause the product in the image to differ slightly in color from the actual product. The allowed measurement error is +/- 1-3 cm.