vRH551 Wireless Bluetooth Headphone brings you perfect music enjoyment. With 4.0 technology and high-quality microphone， the headset presents the purest sound quality for clear communication and high definition music. Make every entertainment and communication immersive. Ergonomics Design is perfectly suitable for sporting， running， etc.<br><br><strong>Features:</strong><br><strong>[Bluetooth CSR 4.0 Technology !#!amp!*! Strong Compatibility]</strong><br>Bluetooth CSR 4.0 technology is perfectly paired with almost all Bluetooth-enabled mobile devices such as， for iPhone SE 6s 6 6Plus， for Samsung Galaxy， Tablet PC， Laptop， etc.<br><strong>[Multi-point Connection !#!amp!*! Hands-free Call]</strong><br>It can connect two smart phones at the same time so that you cannot miss any calls. Built-in HD microphones， hands-free calls brings much convenient and like running， sporting， etc. ?<br><strong>[HD Stereo Sound Quality !#!amp!*! CVC 6.0 Noise Reduction]</strong><br>With CVC 6.0 noise reduction， it delivers high definition stereo sound quality when picking up calls or listening to music cutting off ambient noise. Purest and clear sound will present to you at once. Make every entertainment and communication immersive.?<br><strong>[Duration Time]</strong><br>With built-in 90 mAh capacity， it provides up to 5 hours of working time， up to 6 hours of music time and the standby time can last to 175 hours. No worry about low power when you are outside.?<br><strong>[Ergonomics Design !#!amp!*! Sweatproof Design]</strong><br>Human engineering design and silica gel material make the headset comfortable for daily use. Firm and steady fit for your ear. Enjoy music while sporting or exercise with sweatproof design.?<br><br><strong>Specification:</strong>?? ??? ??? ??? ??? ??? ?<br>Bluetooth Version: CSR V4.0+EDR?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Bluetooth Profiles: HFP1.6， HSP1.2， AVRCP1.4， A2DP1.2?? ??? ??? ??? ??? ??? ??? ??? ?<br>Transmission Distance: 10m?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Frequency Response: 20Hz-20KHz?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Speaker Impedance: 16ohm?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Sensitivity(S.P.L): 110dB<br>Noise reduction: CVC6.0?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Talking Time :5 hours?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Music Time: 6 hours?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Standby Time :175 hours?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Charge Time : 2 hours?? ??? ??? ??? ??? ??? ??? ??? ??? ?<br>Charging Interface :Micro-USB?<br>Cable Length: Approx. 21.7cm / 8.54in<br>Item Weight: Approx. 23g / 0.82oz<br>Package Size: Approx. 10.8 * 7.7 * 4.3cm / 4.25 * 3.03 * 1.69in<br>Package Weight: Approx. 101g / 3.57oz<br><br><strong>Package List:</strong><br>1 * Headphone?<br>1 * USB Cable<br>2 * Pairs of Earmuffs?<br>1 * User Manual?<div id="descriptionImg"><img class="lazy" src="//agdetail.image-gmkt.com/m430/133/296/842296133/img/agdetail.image-gmkt.com/133/296/842296133/img/img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/V/9/V2449/V2449-1-07da-LtLJ.jpg" data-original="//agdetail.image-gmkt.com/m430/133/296/842296133/img/agdetail.image-gmkt.com/133/296/842296133/img/img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/V/9/V2449/V2449-1-07da-LtLJ.jpg"></div>