ROCKBROS 90dB Bike Horn 3 Voices IPX4 Waterproof Bicycle Bell Ring Cycling Sound Alarm

Specification:MaterialSilica gelColorBlack, green, blue, red, purpleWeight33 gSize3.5 * 3 cmBatteryButton cellDecibel90 dBSound3 VoicesWaterproof levelIPX4Features:1. 3 voice modes to choose from, 5 appearance colors.2. Silicone material does not hurt handlebar.3. Super energy saving, batteries can be used for one year.4. Waterproof.Package included:1 x Bike Bell