USB Rechargeable Cycling Alarm Horn Waterproof Ultra Loud Electronic Bike Horn

Features: 1. Four kinds of sounds are switched by one button, metal bells, whistle horns, tram bells, vibrating bells. 2. Add multi function button group on the back to achieve volume level adjustment and switch function volume 110 120dB. 3. The structure upgrade sound is more prominent and the more prominent physical communication structure makes the speaker sound more stable and wider. 4. The split type controller is separated from the speaker and installed next to the thumb of the handle to facilitate free pressing and switching. 5. Compact design, the size of the watch can be concealed inside the handlebar without affecting the brakes of the handlebars, shifting gears or other brackets. 6. USB rechargeable polymer battery, built in 280mAh li battery. 7. Fully sealed design without fear of stormy all three outdoor design, to meet the daily harsh environment. 8. It can be fixed on the handlebar in 2 seconds, the rubber ring is adjusted in two steps, and the rubber ring is adjusted. It is suitable for all kinds of bike installation. Specification: Battery type: 702025PL Battery Weight: about 6.3g Gross Weight: about 77.8g Net Weight: about 48g Size: about 12.3 x 7.6 x 4cm 4.8 x 3 x 1.6in Material: ABS Input: 5V 250mAh Sound: 110 120db Sound Mode: 4 Package List: 1 x Control Switch + Speaker 1 x Strap 1 x Charging Cable 1 x Manual .