Using the latest CSR5.0andEDR Bluetooth technology, superior signal transmission, ultra-low power consumption, all Bluetooth devices, automatic answering function, switchable manual answering phone function, safe and fast, built-in high-quality anti-interference microphone It can effectively realize hands-free answering and hang up calls. High fidelity sound, support last song or next song function, volume addition and subtraction, playback pause, automatic callback, and other functions, easy to operate. Product Specification: 1. Bluetooth version: V5.0andCSR(updated,a little different with the manual) 2. Standby: 120Hours 3. Transmission distance: 10M (transmission distance varies depending on environmental factors and mobile phone Bluetooth devices) 4. MIC distance: ≤ 1 meter 5. Lithium battery: 3.7V or 500mA 6.Frequency:2.402 Ghz-2.480 Ghz. 7.Bluetooth Pairing Distance:20-30 meters(Depending on device) 8. Playback time:15 hours. 9. Charging time:<=1 hour. 10. Standby time:<=240 hours. 11. Connection name: BT12 12. Charging Port: Micro USB 5 Pin. Package includes: 1x Bluetooth wireless headset 1x USB cable 1x Fixing tool 4x Earphone pads 2x Screws 1x Microphone protector 1x Manua Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.