TWS Bluetooth earphone

Type: half in-ear Bluetooth: V5.0 Sensitivity: 92±3dB Frequency range: 20Hz-20KHz Microphone sensitivity: -42±1DB Battery capacity: 30mAh Battery capacity of charging case: 400mA Impedance: 32 Ω Rated power: 3mW Driving unit: φ 12mm Play time: about 3.5H (70% volume) Talk time: about 3.5H Standby time: About 48H Charging current: 400ma±50ma Input: DC 5V-1A Cycle counts: about 5 times Charging time of earphone: About 1.5H Charging time of charging case: About 2H Charging port:TypeC Product material: ABS Net weight: 47g