Bone conduction technology delivers music through your cheekbones, ensuring ears remain completely open to hear ambient sounds. Enjoy six hours of continuous music + calls on a single charge. OpenFit design ensures maximum situational awareness and comfort during long-term wear. Type C Charging port. PremiumPitch+ 2.0 Stereo Sound guarantees a premium audio experience, including wide dynamic range and rich bass. Wireless Bluetooth 5.0 connectivity. IP55 certified to repel sweat, dust and moisture, from workouts to wicked weather. Speaker type: bone conduction transducers. Frequency response: 20Hz~20KHz. Sensitivity: 96 ± 3dB. Microphone: -40dB ± 2dB. Bluetooth version: v5.0. Compatible profiles: A2DP, AVRCP, HSP, HFP. Wireless range: 33 ft (10m). Battery: rechargeable li-Polymer battery. Continuous play: 6 hours. Standby time: 10 days. Charge in: 2 hours. Available in Grey color.