This pair of AT-BT808 headphones features excellent sound quality， built-in microphone， adjustable length hinges， soft earmuffs， luxury appearance and foldable design. It is compatible with most Bluetooth enabled devices， such as for iPad， iPhone， Samsung， Blackberry， HTC， Nokia， LG， Motorola， etc. It also supplies with a 3.5mm cable that you can use to connect the headphone to devices without Bluetooth. It is a good choice for listening to music， watching movie， chatting online， etc.                                    Features             With Bluetooth， stereo headset combo， MP3 player and FM radio functions<br> Perfect for iPhone， Samsung Galaxy’s， HTC’s or any other devices that has Bluetooth capability<br> Built-in microphone for clear conversations， allowing you to answer/reject phone calls anytime and anywhere<br> Supplied with a 3.5mm cable that you can use to connect the headphone to devices without Bluetooth<br> Support TF/Micro SD memory card<br> With FM function， it can listen to the FM radio<br> Up to 10 hours playing time， talking time is up to 6 hours， and standby time is 250 hours<br> Powered by the lithium battery (can be charged via USB)<br> Adjustable length hinges and soft earmuffs for comfortable wearing<br> Foldable design for easy carrying and storage   <br>                                                            Specifications             Bluetooth Version     V2.1+EDR    <br> Bluetooth Protocol     HSP/ HFP/ A2DP/ AVRCP    <br> Output Power     Class II    <br> Operating Distance     393.7" / 10m     <br> Operating Frequency     2.4 - 2.4835GHZ    <br> Input Voltage     DC 5V           <br> Working Time     10 hours    <br> Talk Time     6 hours    <br> Standby Time     250 hours    <br> Charging Time     Approx. 2.5 hours    <br> Plug Type     3.5mm Stereo    <br> Color     White    <br> Audio Cable Length     Approx. 47.24" / 1.2m     <br> Headphone Dimensions     Approx. (7.28 x 3.35 x 7.48)" / (18.5 x 8.5 x 19)cm (L x W x H)    <br> Headphone Weight     7.51oz / 213g     <br> Package Dimensions     (7.09 x 7.28 x 3.15)" / (18 x 18.5 x 8)cm (L x W x H)    <br> Package Weight     11.82oz / 335g    <br> Material     ABS     <br>                                                             Package Includes            1 x Bluetooth Headset<br>1 x USB Cable <br>1 x Audio Cable <br>1 x English User Manual<br>