Bluetooth headset mini wireless earbuds waterproof sports mini headset wireless stereo headset

1. Driver: 15mm 2. Impedance: 32 OHM 3. Bluetooth version: v5.0+EDR 4. Bluetooth use frequency band: 2.4GHz 5. Power level: CLASS II 6. Output power: 30mW 7. Bluetooth distance: 10 meters without barriers 8. Frequency response: 20-20000Hz 9. Operating voltage range: 3.0V-5.0V 10. Microphone sensitivity: -42dB 11. The net weight of the product is about 70g .Talk time about 4 hours .Music time is about 4 hours .Standby time is about 120 hours .Charging time is about 40 minutes .Battery capacity 35MAH (charge storage 350MAH)   21. Charging power supply: DC5V power supply [round hole interface] (computer USB port, mobile phone charger, car charger) Single product weight: 35.6g Weight with box: 66g Accessories: manual + data cable + ear cap