SpecificationColor: BlackMaterial:Plastic/ResinSize: 9.6*13.8cm/3.8*5.4inClip width: 6-8.5cmUsage time: 12 hoursCharging type: USB chargingCharging time: 2-3 hoursBattery capacity: 3000 mABrightness: 500 lumensLighting mode: strong light/weak light/flash/fog lightHorn dB: 130 dBFeatures4000 mAh polymer high-capacity battery, with a battery life of up to 12 hours.Farewell to the cumbersome cycling equipment, can be use as the mobile phone rack, horn, car lights, and power bank.Sealed and waterproof, not afraid of rain.130-decibel loud alarm, effective warning to passers-by and vehicles.Double-bead lighting ensures safety of traveling at night.Packing list:1*Lamp body1*horn line1*data line1*fixed base