Product details of F9 Pro TWS (True Wireless Stereo) Bluetooth Earphones Headset (Connect With All Bluetooth Devices).

Bluetooth version: 5.0
Bluetooth range: Up to 10 meters
Frequency response: 20Hz-20kHz
Driver unit: 10mm dynamic driver
Impedance: 16 ohms
Sensitivity: 105dB +/- 3dB
Microphone sensitivity: -42dB +/- 2dB
Earphones battery capacity: 50mAh
Charging case battery capacity: 800mAh
Earphones charging time: About 1 hour
Charging case charging time: About 2 hours
Playtime: Up to 5 hours per Earphones , up to 25 hours total with charging case
Standby time: Up to 120 hours
Waterproof rating: IPX7
Earphones weight: 4.5g each
Earphones dimensions: 2.2 x 1.9 x 2.5cm
Charging case weight: 43g
Charging case dimensions: 8.4 x 4.5 x 3.3cm