Specification:Condition: 100% Brand New Item Type: Helmet Headset Material: ABS Color: As picture shown Bluetooth Version: 4.1 + EDR, CSR Frequency: 2.402GHz-2.480GHZ Range: 20-30 Meters/65.6-98.4ft (Depending on Equipment), Microphone Transmission Distance: ≤1 Meter Lipo Ion Battery: 3.7v / 250mA (Built-in) Play Time: ≤15 Hours Charging Voltage: 5V Charging Time: ≤1 Hours Standby Time: ≤48 Hours Bluetooth Name: BT8 Product Instruction: This helmet Bluetooth headset is carefully designed by the designer according to the internal structure of the motorcycle helmet, using the latest CSR 4.0 + EDR Bluetooth technology, super strong signal transmission, ultra low power consumption, spending all Bluetooth devices, supporting automatic answering function , No longer need to answer the phone manually when receiving a call, safe and fast, using a full enclosed silicone button waterproof designed, the internal for PCB is also nano-water-proof treatment, with double waterproof measures, waterproofing reaches more than 6 levels, four button designed can one click to activate the for SIRI function and the smart voice function of the for Android mobile phone. Package List:1 x Headphone 1 x USB Cable 1 x Instruction 4 x Headphone Cotton