Media-Tech MT3588 Bluetooth 5.1 EDR

 BT AUDIO RECEIVER MT3588   Features: Bluetooth handsfree receiver Answering, volume, media buttons Build-in sensitive microphone Easy pairing and use Power effective Bluetooth V5.1+EDR Compatible with most BT interfaces, mobile phones and smartphones Transmission power and frequency: Class 2/2.4 Ghz Transmit distance up to 10m Advanced Lithium-Polymer rechargeable battery, up to 3 hrs operating (depends of connected device) Charging time around 30 min by micro USB socket Metal Jack 2 Jack stereo adapter Wearing hook built-in Dimensions: 15x58x14mm Weight: 7g