Features: 1. LED 100% brightness: Three gear, endurance time, bright light about 5 hours, low light about 10 hours, flashing about 10 hours. 2. Loudy speaker: 130 db treble loudspeaker to ensure your safe journey. Integrated speaker 5 kinds of sound. 3. Cell phone bracket design: suitable for 4-6.3inch cell phones, shock-absorbing soft rubber cushion material, do not hurt the phone. 4. USB input and output: two-way USB interface, can be connected to the computer, charger, charger, etc., charging at any time. 5. Speaker design: 5 kinds of sound switch, split line control, free adjustment. Battery capacity:2000mAh; Headlight brightness:400lm; Endurance time:5-10h; Compatible phones:4-6.3inch phones; Sound modes:5 modes; Lighting modes:Bright - low light - flashing; Horn Decibels:130dB; Lamp bead type:3 x LED; Charging mode:Two-way USB interface charging; Waterproof;Living waterproof; Package Included: 1 x Bike Light; 1 xHost; 1 x Bracket; 1 x USB Cable