Beyution HiFi Wireless Over-ear Bluetooth Headphones Built in Mic-phone with Retail Package - White New HiFi Wireless Bluetooth Headphone Headphones headset for Cell Phone/Laptop/PC/Tablet iphone 7 iphone 7plus HiFi - Best Audio Performance - Stereo - Sports - Wireless Bluetooth - Over the head Built-in microphone Allows clear Phone communication; Enables use as a headset. Music and phone controls ensure ease of use Built-in rechargeable lithium-polymer battery With Li-battery enables up to 7-8 hours of talk time or audio playback, Standby time up to 180 hours. Passive noise reduction Up to 15dB blocks background sounds for an immersive listening experience. Noise Blackout with dual microphone technology promotes optimal call quality. CSR solution,HSP,HFP,A2DP,AVRCP Lets you wireless connect to compatible devices, including Apple iPhone 7/7plus/6S/6/6plus/5s/5c/4s/4c/3/2 iPAD iPod, Android Smart phone; Samsung Galaxy S6/S5/S4/S3 Note 4/2/3; Galaxy Tablet; Nokia Toshiba Sony and BlackBerry Smart phone and devices. Allows simple transport and storage included free travel pouch. Provides a simple wired connection of a variety of devices.40mm drivers Built-in rechargeable lithium-polymer battery enables up to 7-8 hours of talk time or audio playback, Standby time up to 180 hours. Bluetooth Connection Mode:Bluetooth 4.1 tech, provide a speedy and steady connection with your bluetooth device; Wired Connection Mode: When headphone was low-battery, you can enjoy the music in every moment with no charge via 3.5mm audio cable Music Sharing ModePair BT513 headphone to your device via Bluetooth,then you can wire connect to your another headphone and share the same music/ vedio with other peoples (family/ friends/ lover) via 3.5mm audio jack. Come with a40mm driveralong with neodymium magnets produce deep, enhanced bass and full-range sound for dynamic audio, bring you away from the noise of city and enjoy yourself in the music world. Free to adjust the headband size to fit for everyone. Bluetooth headsetbuilted-in micphonefree your hands from Hand-held phone. With over-ear soft cushions helping to further reduce noise while provids a secure and comfortable wearing experience. <span class="a-text-bold">Battery:</span>3.7v/250mAh <span class="a-text-bold">Charing input:</span>5v/1.0A <span class="a-text-bold">Standby time:</span>about 200 hours <span class="a-text-bold">Successive Talking Time:</span>about 8 hours <span class="a-text-bold">Music Playing Time:</span>about 5~6 hours <span class="a-text-bold">Charging Time:</span>2~3 hours <span class="a-text-bold">Volume Control:</span>16 ranks, 3dB variation in each rank <span class="a-text-bold">Speaker Diameter:</span>40mm <span class="a-text-bold">Frequency Response:</span>20~20KHz <span class="a-text-bold">Microphone Unit:</span>4*1.5mm <span class="a-text-bold">S.P.L:</span>-423dB <span class="a-text-bold">Impedance:</span>2.2K <span class="a-text-bold">Frequency Response:</span>20Hz~20,000Hz <span class="a-text-bold">Bluetooth Receiver Range:</span>33 feet/360 1 pcs x Beyution wireless bluetooth headphone<span class="a-text-bold">White</span> 1 pcs x USB charging calbe 1 pcs x 3.5mm audio cable 1 pcs x User manual 1 pcs x Carry Pounch