The lightweight and comfortable Trekz Titanium wireless stereo headphones are the safest alternative to traditional sport headphones and earbuds. Bone conduction technology, an open ear design and a suite of convenient features deliver premium music play and crystal clear calling without compromise. Designed with athletes in mind, Trekz Titanium are sweatproof, secure, and will allow you to hear your surroundings - no matter where life takes you.FEATURES:Bone conduction technology delivers music through your cheekbones, ensuring ears remain completely open to hear ambient soundsTitanium wraparound headband is lightweight and flexible for durability and portabilityOpenFit™ design ensures maximum situational awareness and comfort during long-term wearPremiumPitch+™ guarantees a premium audio experience, including wide dynamic range and rich bassWireless Bluetooth® 4.1 connectivity and convenient multipoint pairingLeakSlayer™ technology significantly reduces natural sound leakageIP55 certified to repel sweat, dust and moisture, from workouts to wicked weatherEnjoy six hours of continuous music + calls on a single chargeEQ presets boost bass and reduce vibration on the goDual noise canceling microphones exclude surrounding noise, effectively enhancing speechAudrey Says™ voice prompts guide users through power, pair, play and talkHassle-free 2-year warranty SPECIFICATIONS:Speaker type: bone conduction transducersFrequency response: 20Hz~20KHzSensitivity: 100 ± 3dBMicrophone: -40dB ± 3dBBluetooth version: v4.1Compatible profiles: A2DP, AVRCP, HSP, HFPWireless range: 33 ft (10m)Battery: rechargeable lithium ionContinuous play: 6 hoursStandby time: 10 daysCharge in: 1.5 hoursWeight: 1.27 oz (36g)