Bluetooth Version: V5.0 + BLE Color: black and white Charging box size: 38*60*60mm Headset size: 28*18*26mm Product weight: 4.9g * 2 (auricular) / 61g (loading box) Inlet connection time: 10 M (without barriers) Speaker: 5.8MM, titanium film Speaker sensitivity: 90 ± 3dB 1kHz / 1mW Impedance: 16 ± 15% 1kHz Frequency of speaker: 20Hz to 20KHz MIC Sensibility: -42 3dB Frequency Playtime: 21 hours Talk time: 4-5H Wait time: 80H IPX6 waterproof