This HBS760 1-to-2 Halterneck Style CSR 4.0 Bluetooth Sports Headset with Calls Function is ergonomically designed into neck wearing structure for soft and comfortable wear. Besides， neck strap design is convenient to carry. HBS760 adopts left and right symmetric design， so it looks well in visual effect and appearance. The earplug and grooveboth adopt magnetic suction design which can absorb earplug firmly withoutwrapping wire trouble. Adopting superb Bluetooth smart chip， this headphone ensures stable Bluetooth receiving. Besides， it provides you with vivid and clear sound， high-fidelity conversation. With 1-to-2 function， it can switch music play of two mobile phones simultaneously under music condition. Also it can switch incoming calls freely under phone state.                                    Features             HBS760 adopts imaginal memory space metal material for unprecedented and comfortable wear <br> Special design style， fashionable and avant-garde stoving varnish technique  <br> Tight magnetic storage groove design <br> Support APT-X to ensure excellent and high-fidelity tone quality <br> Incoming voice prompt and vibration functions， one-key answer and reject function <br> 10m high-fidelity stereo speaker  <br> LED battery indicator for easy management <br> Support two mobile phones or devices with Bluetooth simultaneous connection as its multi-point match technology<br> Fast and easy charging， ultra long standby time <br> Adopt ultra light head band for comfortable wear    <br>                                                            Specifications             Model     HBS760    <br> Bluetooth Profile Supported     HSP V1.2， HFP V1.6， A2DP V1.2， AVRCP V1.4    <br> Output Power Class     Class 2    <br> Operation Voltage     1.8V/ 3.3V    <br> Battery Capacity     3.7V/ 195mAh Lithium Polymer Battery    <br> Bluetooth Version     CSR 4.0    <br> Transmission Distance     >10 Meters    <br> Charging Time     15 Hours    <br> Music Playing Time     >10 Hours    <br> Standbys Time     >500 Hours    <br> USB Cable Length     17.72 " / 45 cm    <br> Operation Temperature     -10℃ - 60℃(14℉ - 140℉)    <br> Weight     1.31 oz / 37 g    <br> Color     Champagne White    <br> Compatible with     V3.0， V2.1， V1.1    <br> Dimensions     (7.48 x 5.51 x 0.79) " / (19 x 14 x 2) cm (L x W x H)     <br>                                                             Package Includes            1 x Bluetooth Sports Headset<br>1 x USB Cable<br>1 x User Manual<br>2 x Ears Caps<br>