WireTrax Premium Bluetooth Wireless HeadPhones with Microphone for Smartphones & Tablets - Green Premium Quality Headphones. Never have to deal with annoying wires and tangles ever again. Fully exercise-proof: with functional user interface, earpiece design, and a 10-meter working distance, our headphones will let you enjoy music through a variety of activities. Universal device compatibility: WireTrax Headphones are compatible with most Bluetooth-enabled phones, and reduce external sound. Simple-to-use: control all functions of your music (volume, sound, song selection) and calls from your phone via our simple-to-use user interface on the headphones themselves. Sweat-proof, durable design, Onscreen Battery Meter, Up to 5 hours of Talk/Playing Time and 150 hours Standby Time.