AfterShokz AS600MSG Trekz Titanium Mini wireless bone conduction open ear slate gray and black headphones are offered, in a slate gray and black color and designed with athletes in mind. AfterShokz AS600MSG headphone has dual noise canceling microphones exclude surrounding noise, effectively enhancing speech and LeakSlayer technology significantly reduces natural sound leakage. AfterShokz AS600MSG features bone conduction technology delivers music through your cheekbones, ensuring ears remain completely open to hear ambient sounds and OpenFit design ensures maximum situational awareness and comfort during long-term wear. AfterShokz AS600MSG also features lightweight and flexible titanium wraparound headband for durability and portability, PremiumPitch+ guarantees a premium audio experience, including wide dynamic range and rich bass, Wireless Bluetooth 4.1 connectivity and convenient multipoint pairing, IP55 certified to repel sweat, dust and moisture, from workouts to wicked weather, enjoy six hours of continuous music + calls on a single charge, EQ presets boost bass and reduce vibration on the go. AfterShokz AS600MSG voice prompts guide users through power, pair, play and talk, Speaker type: bone conduction transducers, Frequency response: 20Hz~20KHz, Sensitivity: 100 ? 3dB, Microphone: -40dB ? 3dB, Bluetooth version: v4.1, Compatible profiles: A2DP, AVRCP, HSP, HFP, Wireless range: 33 ft (10m), Battery: rechargeable lithium ion, Continuous play: 6 hours Standby time: 10 days and Charge in: 1.5 hours. AfterShokz AS600MSG headphone is brand new in its original packaging.