Model Number: I9-pro tws
BT Version: V5.0+EDR
Color: White
Talking time: About 5 hours
Transmission Distance: 10-15M
Music time: About 2.5 hours
Frequency range:2.4026Ghz-2.480Ghz
Output:  of DC5V 450mAH
Charging time(usb charher): About 1 hours
Charging time(wireless charher: About 1.5 hours
BT Profile: HSP/HFP/A2DP/AVRCP
Weight: 100g
Size: 100*100*30mm