Look forward to what it serves you!<br>   What you expect for your daily mobile answering? Much more convenient? All right， this T820 Bluetooth In-ear Headset is just the ticket. With high-capacity battery， the Bluetooth headphone offers longer talk time than normal Bluetooth headsets. The Bluetooth headset， not only provides high speed transmission， but also has noise free effect. And it even can transmit messages， files and images with large capacity. Besides， with great sound quality， this Bluetooth headset will let you enjoy perfect hearing experience. In addition， this Bluetooth headset is compatible with any Bluetooth enabled mobile phone.                                                                        Specifications            Version    V2.0 / V2.1    <br>Frequency range    2.4GHz-2.4835GHz    <br>Transmission power    Class 2    <br>Transmission distance    10M    <br>Operating current    ≤25mA    <br>Standby current    ≤40μA    <br>Charging time    2-3 hrs    <br>Talking time    6.8 hrs    <br>Standby time    200 hrs    <br>Operating voltage    3.6V    <br>Environment temperature    Working: -20°C~60°C<br> No Working: -20°C~60°C<br> Charging: 0°C~45°C    Dimensions    4.5 x 2.5 x 3.6cm / 1.77 x 0.98 x 1.42inch    <br>Weight    73g / 2.58oz    <br>Color    Black    <br>                                                            Package Includes            1 x T820 Bluetooth In-ear Headset Perfect Design Black<br>1 x Charge<br>1 x Manual<br>                                                            Extra Info            How to Activate a Bluetooth Headset:    Set you Bluetooth headset device to Discovery mode. To do this， usually you just hold down the control button for 3+ seconds until the light stays continuously lit. If the device asks for a pass codes for these devices are 0000 or 1234. Consult the user&acute;s manual of the device for the correct code if not listed here<br>  Set your phone or mobile device to find the Bluetooth device. To do this， go to settings and find the Bluetooth link. Activate the link (select Yes to activate)<br>  Set the phone to Find Audio Device mode. The phone will search and the Bluetooth device will register. Click confirms or OK<br>  Exit Settings mode on the phone. Your Bluetooth headset device is now connected and ready to use<br><br>For the charger:<br>If you need a EU charger， click here: US to EU Power Plug Converter Adapter<br>If you need a US charger， click here: EU to US Power Plug Converter Adapter<br>If you need a UK charger， click here: Universal UK AC Power Plug Adapter Converter