HD sound with powerful bass: The Rockerz 210 dynamic 10mm drivers surely packs a punch, the earphone has a frequency response of 20Hz-20000Hz which delivers detailed, mellow sound while keeping the bass level high. Unrivalled design - sweat and dust proof: Created to compliment your lifestyle, Rockerz 210 Wireless earphones are a definite fashion statement. Its gleaming ergonomic design with memory wire enables for easy adjustment and optimal wearing comfort fit for your ears while providing you the most authentic sound ever. Take it anywhere, the Rockerz 210 wont ever let you down. In-built Mic with integrated controls: The boAt Rockerz 210 features a premium CSR 8640 chipset for high quality music reproduction and HD Clear calls. Now you can adjust the volume with the +/- button, pause/play, change tracks, and even answer calls with the multi-function button. Listen in comfort: This noise isolating earphone is compact and lightweight and comes with an adaptable memory wire, designed for a comfortable fit around the ear with maximum durability. Put everything to the test, while you listen in optimal comfort. The longer, the better: Music, uninterrupted. Now you can enjoy your favorite tunes all day thanks to the enduring 100 mAh rechargeable battery that delivers up to 8 hours of audio excellence and a standby upto 200 hours. What more, you can get a full charge in just 2 hours with the included USB cable.