Binaural TWS Bluetooth headset

Bluetooth version: 5.0 Chip: Airoha 1536U Type: ANC(Active Noise Cancellation) Support protocol: HFP/HSP/A2DP/AVRCP Speaker: 13mm Distortion: <5 % speaker sensitivity: 113±3db microphone sensitivity: -42±3db impedance: 32ω signal to noise ratio:>85db Frequency response range: 20-20KHZ Battery type: polymer battery Battery capacity: 45mAh Charging box battery capacity: 360mAh Charging current: 50mA Charging time: About 90 minutes Charging current: About 340mA Charging input interface: lighting Charging input voltage: DC 4.8~5.4V Rated power: 3mW Talk time: about 4H Music time: about 5H Charging Time: About 60min Standby Time: About 520 days Earphone N.W: 3.8g Charging box weight: 48.2g Charging box size: 60.8*22*45.4mm