Appswer Bluetooth Headphones Wireless Neckband V4.1 Earbuds Sports Sweatproof Earphones Noise Cancelling Headset in Ear Stereo Running with Microphone for iPhone Android Cellphone,Black

Sound Leadership & Voice Clarity Featured with CVC6.0 noise cancellation technology, the headphone intelligently filters out background noise for perfect speech transmission in busy and noisy environments. Convenient Controls By short and long press on the control buttons, you can handle phone calls (answer, reject, last number redial), or make musicadjustment (volume up/down, previous/next song, pause/play). Comfortable Neck-Behind Design Neck-Behind wearing style provides a comfortable fit and easy button control in light weight. High-Fidelity Sound Bluetooth 4.1 ensures crisp, skip-free stereo sound. CVC 6.0 Noise Cancellation reduces outside noises. Hands-free Calling Bluetooth Earphones with built-in microphone allow auto switching between music and calls. Flexible and Comfortable stable Earbuds Portable and Lightweight Bluetooth Headphones,unique flexible and comfortable design avoid any pains after hours of wearing and 3 ear tips of different size ensure you get it perfect fit and remain stable in your ear. How to ues the combination? 1.Before connecting Bluetooth, hold the middle button for 2-3 seconds to turn on the headphones, the LED light is flashing and you can hear "power on". 2.Open the bluetooth on your phone and choose the "KB1000", and you can hear "connected" after 2-3 seconds and the green light stays on. And now you can use and feel the different enjoyment from our headphones. Specifications: Version:V4.1 Frequency:2.4-2.48GHZ Transfer distance:10 meters Wireless Operation:class 2 Profiles Supported:HSP/HFP/A2DP/AVRCP/APTX If there is any problem with our product, please feel free to contact us. We provide 24 hours friendly email customer support for you. Any quality problem will be refund or replaced.