4-1 Multifunctional Design: This bike light set features 4 practical functions bicycle headlight, mobile phone holder, power bank, and bicycle horn. The convenient and versatile design enhances convenience and safety during cycling. 3 LED Lamp Beads Design: This bicycle lamp features 3 bright LED beads for increased brightness. It offers 3 light modes: high beam, low beam, and flashing mode, helping you ride more safely at night. Easy Installation: The headlight comes with a mounting bracket that easily attaches to the handlebar. The silicone mount strap for both headlight and taillight has four openings to securely fit most seat post sizes. Both lights can be quickly installed or removed without tools. Bike Light Set with 3 Light Modes, 4000mAh front and rear USB rechargeable waterproof headlight with phone holder, and 5-mode speaker. The adjustable phone mount fits most phones up to 6.3 inches. The 2.163.15 inch (5580 mm) wide clamp fits handlebars from 0.86 to 1.25 inches in diameter. (For a stable clamp, ensure the screw is tightened after installation.) Color: Blue Material: ABS Plastic Size: 8.2 x 12.5 cm Package Contents: 1 x Car light phone holder Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 13 cm.