Denver Wireless Bluetooth headset with handsfree function Built-in rechargeable battery (up to 20 hour music playback)

* Wireless bluetooth headset * Easy to use, pair with your mobile phone and you are ready to listen to music, and take calls with the headphones on (built-in microphone) * Frequency response: 20Hz-20KHz * Sensitivity: 110+/_3dB * Operating range up to 10 meters * Rechargeable battery built-in - 300mAh (charge time app. 2 hours) * Play music time up to 20 hours * Bluetooth V5.0 - Supports HFT, A2DP & AVRCP