These Features You Can't Miss! Super-long Continuous Service,12 Hrs Playing Time and Talking Time; Ergonomic Design; Incoming Phone Number Reading;Strong Compatibility; One-For-Two Function; Last Phone Number Callback; Volume Control; HD Voice Call; Active Noise Reduction; Battery Level Display; Intelligent Power Saving Technology; Rubber Paint Spraying Technology; Nipple-level Silica Gel Cap; TPE Tangle-free Cable; Waterproof &Sweatproof Design; Non-easy Falling Off; Gift-level Package. How to achieve "One-For-Two"? 1.Turn on the Bluetooth function of the first cellphone; 2.Press "multifunction key" of headphones about 3s until flicker blue/red light; 3.Search "U9" on the first cellphone to connect and then disconnect; 4.Follow above steps to connect with the second cellphone; 5.Reconnect with the first cellphone; Product Parameters: Bluetooth Version: V4.1 + EDR Charging Mode: power adapter output (DC5V) Battery: 150mAH Fully charged :About 2hour Calling Time: 12h Music playing time: About 12hours Standby time: About 250hours Range: 10 meters (DSH-IIIB ) Technical Support Protocol: Headset/Handsfress/A2DP/AVRCP APT-X/Hands-stereo What's in the Box? 1*Headphones 1*User Manual 1*USB Cable 1*portable bag 2*Ear Tips (S+L) Please Note : please be sure to select the most suitable earplugs for your ear canal to use.This is not only cancel noise but also prevent your headphones off in the process of sports . Don't wait to order the best headphone on the market today!
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