Nowadays， as the development of communicate equipment， more and more business use cell phone or computer video to have a meeting. This W850 Hanging Rhinestone Volume-adjustable Stereo Bluetooth Headsets with Call Function is a functional device. It features a slim， stylish design， portable to carry. Plug in this pair of headsets to enjoy exceptional on-the-go audio with your phone tucked away in your pocket， purse or backpack. Crank up the FM radio when you go for a jog. It will give you stream music wirelessly and let devices talk to each other via Bluetooth. This kind of headsets is very suitable for businessmen to use!                                    Features            Hanging design and adjustable volumeUnique designed to custom fit your cell phoneSimply to use and easy to carryCable management system keeps headsets wrapped up and tangle-freeWith call function and high transmission power                                                            Specifications             Dimensions     2.36 x 0.47 x 0.67" / 6 x 1.2 x 1.7 cm (L x W x H)    <br> Weight     3.77 oz / 107 g    <br> Color     Black    <br> Bluetooth Version     2.1    <br> Frequency Range     2.4GHz-2.48GHz    <br> Transmission Power     Class 2    <br> Transmission Distance     10m    <br> Operating Voltage     3.6V    <br> Operating Current     ≤30mA    <br> Standby Current     ≤2mA    <br> Charger Time     2-3 hours    <br> Talk Time     ≥ 8hours    <br> Standby Time     100 hours    <br> Output Power     0.5W + 0.5W    <br> Working Temperature     -20℃~60℃    <br> Charging Temperature     0℃~45℃     <br>                                                             Package Includes            1 x Bluetooth<br>1 x Earphone<br>1 x Euro Standard Charger<br>1 x User Manual<br>