The award-winning Bluez 2S are the only wireless headphones to offer uninhibited situational awareness, complete with a sound quality that will shock you. A patented design and bone conduction technology guides mini vibrations through your cheekbones to your inner ears, delivering sound without plugging or covering them. Exceptionally lightweight and comfortable, this unmatched open ear listening experience is further enriched through innovative technologies that make it possible (and safe )to tune in to music or voice communication without tuning out the world. Features: Bone conduction technology uses vibrations to transmit sound waves directly to the cochlea. OpenFit assures unmatched ambient sound awareness and extended comfort. PremiumPitch patented dual suspension transducers guarantee the finest bone conduction audio. LeakSlayer technology significantly reduces natural sound leakage. Nanotechnology treatment effectively repels sweat. Dual microphones deliver clear communication even in noisy environments. Specification: Wireless range: 33ft (10m); Battery: rechargeable lithium ion; Continuous play: 6 hours; Standby time: 10 days; Charge in: 2 hours. What's in the box: Bluez 2S headphones, Breathable pouch, Micro-USB charging cable, Adjustable tension band, Reflective sticker