Features:1. Powerful front and rear lights: Night riding lights with 4 high-brightness LEDs provide up to 350lm and 2 hours of continuous lighting.2. High decibel horn: Press and hold the horn button for five seconds to switch five sounds, 140 high decibels are comparable to car horns.3. USB direct charging: Convenient and worry-free USB direct charging design, you can plug in the mobile power or directly charge.4. High-strength waterproof: to ensure your travel safety, no matter the rainstorm or the fog; it can be used normally.5. Easy to install and operate: The bicycle headlight and taillight set comes with nylon cable ties, you just need to find the right angle to fix it.Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Speaker mode: short press for short tone / long press for long toneDecibel: about 140 decibelsMaterial: ABSProduct function: horn + headlightProduct size: 7.5*5.5*2.5cmWaterproof function: IPX6 waterproof levelLamp bead material: four high-brightness XPEFlash mode: low light/strong light/breathing light/strobe/SOS