1. Drive: 15mm
2. Impedance: 32 OHM
3. Bluetooth Version: Bluetooth v4.2+EDR
Bluetooth uses the frequency band: 2.4GHz
5. Power Level: CLASS II
Output Power: 30mW
Bluetooth range: 15~20 meters with no obstructions.
Frequency Response: 20-20000Hz
9. Working voltage range: 3.0V-4.2V
10. Mic Sensitivity: -42dB
11. Supports A2DP / AVRCP high-quality stereo audio transmission and remote control protocols
12. Powerful noise cancellation circuit (active noise cancellation)
Charging time is approximately 1 hour.
Product Size: Diameter 25MM, Length 15MM, Height 35mm
15. The product weighs approximately 8g.
The call lasted about 2-3 hours.
The music time is about 2-3 hours.
Standby time is about 96 hours.
Battery capacity: 45mAh (Charging case: 450mAh)

20. Charging Power Supply: DC5V Power Supply with Round Port (Computer USB Port, Mobile Phone Charger, Car Charger)
 

Total weight: 120 grams
Packing Size: 10*10*3.5cm
Product color: black, white, gold, rose gold, red.
Standard equipment: earphones + charging case + charging cable + instruction manual + packaging box