The most advanced Bluetooth technology CSR 8640. No more choppy playback, weak batteries, dropped phone calls. Not all Bluetooth headsets are created equal! Bluetooth 4.1 increases battery life dramatically while letting you travel further. Bluetooth 4.1 allows specify the reconnection timeout intervals for their devices.Precision Sound
State-of-the-art design and technology come together in the unbelievable sound of the boAt Rockerz Sports 250 wireless earphones. Its dynamic 8mm drivers pack a punch of true bass like no other, delivering a rhythmic response to even the most demanding tracks. With a wide frequency range of 20Hz-20 kHz, you’ll be hearing your favourite songs in a whole new light. So turn up the volume, plug in and tune out in style.IPX7- Water Proof
Now there’s no such thing as bad weather. Developed for training and practicing in any condition, these can endure through rain, water & sweat. It complies with the stringent IPX7 certification. The boAt Rockerz Sports 250 earbuds are sonically welded shut, blocking out sweat, rain or other type of moisture that would otherwise ruin your earphones. A truly rugged earphone.Magnetic Locking System and Braided Cable
Secure the buds around the neck when not in use. It prevents the earbuds from falling and keeps them safe when not use. Flat cables are making it almost free from tangles and knots.Easy-Tap Controls
In line control board, the Rockerz Sports 250 is truly the earphones of the future. Now you can pause/play, change tracks, adjust the volume and even answer calls with a simple tap of the control board. A clutter-free, seamlessly integrated design for instinctive use.