Announcement
Working time: about 2-3hours
Charging time: 1 hour
Standby time: 120hours
Battery: 400mah for charging box, 40mah for earbud
Bt transmission distance: 30 meters
Frequency: 2.4G-3.2GHZ
Speaker : true copper ring
charging case dimension: 53x43x21mm
earbud dimension:41mm*17mm*5.7mm
Net weight: 100g
Size : 47.5x38x20mm