ALLIMITY Wireless Bluetooth Hifi Stereo Headphones with Microphone for Gym, Running, Hiking, Cycling, Jogging, Biking, Training and Exercise(Pearl White/White) 1. FANTASTIC SOUND AND AMAZING VOLUME: This wireless bluetooth earbuds adopts High-fidelity audio technology, unparalleled HD Hifi stereo streaming output, offering you an excellent sound experience; It also uses professional and intelligent echo cancellation and noise cancellation technology to filter ambient noise and reduce background noise, you can enjoy clear music even you are in crowded gym or street. 2. TWO LINK CONNECTION AND EASY PAIRING: bluetooth 4.1, this bluetooth headsets can easily pair with pair with iPhone, iPad, iPod, Samsung, Sony, HTC, LG, Nokia, BlackBerry and most Bluetooth-enable devices; It can connect to 2 devices simultaneously and the connecting distance range up to 10 meters (33 feet) with stable singles. 3. COMFORTABLE WEARING AND PERFECT FIT: Ergonomic design, come with earhook to fit different ear shape, sweat proof and moisture proof material, giving you a comfortable wearing experience and perfect fit for gym, training, exercise, sport, running, jogging, biking, cycling. etc. 4. STYLISH AND UNIQUE DESIGN: The design inspiration for headphone exterior is come from a Chinese traditional culture-Taichi. Taichi is a kind of health care way for keep health, self-defense and safeguard against disease. Each exterior piece of headphone means Yin and Yang of Taichi. Left is Yang. Right is Yin. Left and right is symmetrical. You will be the center of attention when you wear this headphone. 5. LONG STANDBY AND PLAY TIME: Built-in 75mAh Rechargeable Li-ion Battery, standby time up to 150 hours, talk time up to 5.5 hours, music time up to 5 hours with every 2 hours full charging.