Usage Tips:Features: 1. Utilizes the latest CSR4.0andEDR Bluetooth technology, super strong signal transmission, ultra-low power consumption, and expenditure of all Bluetooth devices 2. support for automatic answer function, can switch to manually answer the phone function, safe and fast, built-in high-quality anti-interference microphone, can effectively realize the hands-free answer, hang up the phone 3. high sound fidelity, the function can be operated up and down song, volume up and down, play pause, automatic callback, and other functions, simple operation. Specification: Connection Name: BT Bluetooth Version: V4.2andCSR (update, slightly different from the manual) Transmission Distance: 10M (transmission distance varies due to environmental factors and mobile phone Bluetooth devices) Bluetooth Pairing Distance: 20-30 Meters (depending on the device) Standby: 120 hours Play Time: 15 hours Charging Time: <=1 hour. Lithium Battery: 3.7V/500mA MIC Distance: ≤ 1 meter Frequency: 2402 Ghz-2480 Ghz. MIC Distance: 1 Meter Feature 1: Helmet Headset Bluetooth Feature 2: Helmet Headset Motorcycle Bluetooth Feature 3: Helmet Headset Motorcycle Feature 4: Motorcycle Headset Helmet Feature 5: Motorcycle Headset Bluetooth Feature 6: Motor Headset Bluetooth Feature 7: Helmet Motor Headset Feature 8: Helmet Motor Bluetooth Headset Feature 9: Headset for Helmet Feature 10: Headset Motorcycle Helmet Package Includes: 1x Motorcycle Helmet Headset 1x Cable 1x Manual 1x mic cover 2x static stickers