RB-HF630B Wireless Stereo Headphones*The RB-HF630B wireless headphones offer up to 72 hours of playback time and a quick 15-minute charge for 6 hours of playback. They are still light and comfortable and offer a sound packed with bass. *The product's colours vary by country and sales region. Feel the Bass DAY-TO-NIGHT POWER: Enjoy up to 72 hours of continuous wireless playback on a single charge with these Bluetooth headphones, perfect for travel, while a 15-minute Quick Charge provides 6 hours of use POWERFUL ROBUST BASS: Experience powerful sound and robust bass without distortion thanks to the 30mm driver, neodymium magnet and Extra Bass System (XBS) on these rechargeable headphones, ideal for immersive listening CLEAR CALLS & VOICE ASSIST: Make crisp, clear calls using the built-in ENC (Environmental Noise Cancellation) microphone, which eliminates background noise and delivers voice clarity, and also provides voice assist functionality LIGHTWEIGHT, COMFORTABLE DESIGN: Listen in comfort for extended periods with the lightweight, ergonomic design of these compact earphones, weighing less than 140g and featuring an adjustable headband with soft cushions, ear pads and swivel design MULTIPOINT CONNECTIVITY: Seamlessly switch between devices using Bluetooth 5.3 wireless technology, offering superior audio quality, longer playtime and the ability to connect up to two devices simultaneously