Functional performance: Double-mic ENC noise reduction，Hall power on
1.Frequency:5Hz-20khz  V5.2 Version
2. Effective straight-line distance: 15 meters
3. Speaker: φ13
4. Battery: polymer lithium battery earphone 30mah, polymer lithium battery charging compartment 300mah
5. Playing time: single ear: 4-5H; pair ear: 4-5H
6. Standby time: 120H for one ear, 80H for opposite ear
7. Fully charged time: about 1 hour for earphones, about 2 hours for charging compartment
8. Color: white, black
9. Headphone size: 32*5.7*19MM

10.Charger size: width 52.52*24MM