Bluetooth Version: V5.3
Battery Capacity:50mAh*2
Stand-by time: 300h
Talk time: 10h
Play music time: 9h
Earbuds Play for 30h at 80% Volume with Charging Case
charging time: 1.5h
Case Battery: 300mAh /3.7V
Charging with headphones case
Frequency range: 2.402G-2.480G
Transmission distance:10m
Profile support: HSP、HFP、A2DP、AVRCP
Impedance:32Ω±15%
Ambient Temperature :-20℃/+60℃