Bluetooth Headphones, Iwotou Wireless Bluetooth 4.1 Headphones Hi-Fi Stereo Sound Sports Earbuds with Microphone Aptx Technology for Smartphones Iphone, Samsung Galaxy (Black) Advanced Bluetooth 4.1 Technology and strong wireless signal, it can be well connected with your smartphones or Bluetooth devices within 10 meters. Start enjoying music or your calling time more breezily. Digital Noise Cancellation Earphone: eliminating the white noise by adopted digital noise reduction technique, delivering amazing stereo music experience and clear sound even in noisy occasions. High quality rechargeable battery that ensures ultra-long standby time (up to 280 hours),and 8-10 hours for calling time & 6-8 hours for music playing incessantly after 2 hours full charging. Exercise-proof & Sweat-proof and specially collar clip design, you can enjoy a stable and comfortable experience during running, exercising, climbing, camping, driving or any other outdoor sports with the lightweight device. Multiple uses supported: Bluetooth Music Receiver/Bluetooth Phone Call Receiver/FM Stereo Radio/ Bluetooth Remote Shutter for photo shoot. It can be easily pair to your iPhone, iPad, Samsung, Tablet, Laptop and many other smart devices with Bluetooth functionality.