NexGadget Sports Portable Wireless Stereo Headset Bluetooth Earbuds Headphones Built-in Mic for Bluetooth Enabled Device Wireless headphone with high quality stereo sound: a good listening atmosphere will be created by this high quality headphone. Built-in HD microphone with noise reduction & echo cancellation allows you get high quality and clear voice even in the gym or other noisy environment. Flexible and comfortable design: Unique neck-strap design for easy carrying, ultra light weight for all day comfort, 45adjustable angle design. All together make it comfortable, stable and built for action. Powerful rechargeable battery: up to 4 hours play time, 5 hours talk time and 130 hours of standby time let you stay moving longer and give you long-time enjoying while exercising. On-ear control for calls and music: you can simply stream and control your music and calls via your sporti. So you wont worry about missing an important call while exercising or slow down your pace purposely for the call any more. Safety oriented: water-proof, sweat-proof design provides you the best orientation of safety, so you can wear it anytime you want even though in the rainy days, making it become your best partner while taking exercise.