AfterShokz AS600MPK Trekz Titanium Mini wireless open ear pink and black stereo headphones features a bone conduction technology delivers music through your cheekbones, ensuring ears remain completely open to hear ambient sounds, designed with athletes in mind and OpenFit design ensures maximum situational awareness and comfort during long-term wear. AfterShokz AS600MPK has dual noise canceling microphones exclude surrounding noise, effectively enhancing speech and LeakSlayer technology significantly reduces natural sound leakage. AfterShokz AS600MPK 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 AS600MPK also features 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.