ALLIMITY Bluetooth Headphones Wireless Sports Earphones with Mic Sweatproof In Ear Earbuds Headset for Gym, Running, Cycling, Jogging(Blue)[Upgraded Version] Adopting advanced Bluetooth version 4.1, this bluetooth earphones is easy to pair and connected with iPhone, iPad, Android Cell Phones, Windows Phones, and most Bluetooth enable devices This headphone is built-in microphone for hands free calling; it also use CVC 6.0 noise reduction tech to filter ambient noise and reduce background noise to help you have a incredible sound quality, you can focus on your favorite music and enjoy yourself no matter when and where you are This earphones is designed with comfortable rubber-made ear plugs to fit different face and ears shape and ergonomic, eco- friendly earhook, so you don't need to worry that it won't fit your ears or face or it will drop from your ears when you are running, jogging, cycling, biking, exercise Sweatproof and soft smooth silicone gel surface, adding a free portable zippered carrying case used for travelling, you can be relaxed no matter when and where you are Built-in rechargeable Li-ion Battery, playing time up to 8 hours and standby time up to 240 hours with every 2 hours full charging, much more than other sports headphones, hassle free from the annoying frequently charging when you are doing exercise. just enjoy yourself!