Trekz titanium, blue, bone conduction bluetooth stereo headphones & microphone, delivers music through cheekbones, ensuring ears remain completely open to hear ambient sounds, lightweight, flexible titanium wraparound headband for durability & portability, open fit design ensures maximum situational awareness & comfort during long term wear, premium pitch & guarantees premium audio experience, including wide dynamic range & rich bass, wireless bluetooth 4.1 connectivity & convenient multipoint pairing, leak slayer technology significantly reduces natural sound leakage, repels sweat, dust & moisture during workouts & inclement weather ip55, up to 6 hours of continuous music & calls on a single charge, eq presets boost bass & reduce vibration on the go, dual noise canceling microphones exclude surrounding noise, effectively enhancing speech, includes micro usb charge cable & bag, 2 year warranty.