40mm driver surely packs a punch, the headphone has a bass with a frequency response of 20Hz-20000Hz that delivers superior quality, powerful sound while keeping the bass level high Created to compliment your lifestyle, the stylish wireless headphones are a definite fashion statement - with its gleaming housing design and gorgeous faux leather ear cups and headband Giving you optimal comfort and master control board to play/pause, change tracks, answer/reject calls, control volumes everything on one place - you simply don't want to take it off The battery charges quickly in just 90 minutes for nonstop play time of up to 8 hours - for added convenience, simply plug in the aux wire to the 3.5mm audio jack when the battery is exhausted and listen to your playlist nonstop These headphones are ultra-light which only weighs 200g and come with an adjustable headband which is designed for a comfortable fit and maximum durability - so tune out in comfort and jazz up the style. The boAt Rockerz 390 produces audio that is precise, wirelessly. There is nothing more convenient than listening to your music, no wires attached. Featuring a uber cool and sporty design. The body is sleek and lightweight, making portability extremely convenient. Rockerz 390 have been created to provide supreme comfort and exemplary sound reproduction. The over-ear headphones have been optimized for connection to most consumer and professional audio devices. These headphones offer a deep bass with clear mids and highs. The powerful drivers effectively reproduce sound equally across the whole audio band. Sooth yourself while listening to music in a high-quality audio reproduction.