120db electronic rechargeable bicycle horn with remoteUSB 280mAh rechargeable battery charges in 1.2 hours and lasts approximately 30 days or 2500 usesCharging indicator light shows red when charging, and green when fully chargedIP65 water and dust proofCompatible with 22.2 - 31.8mm handlebarsWhistle, horn, and alarm sounds3 Sound Horn w/ RemoteBlackUPC/EAN/GTIN: 888571060032