wireless version: V4.2
frequency: 2.4GHz
Support modelL A2DP1.3/HFP1.6/HSP 1.2/AVRCP1.6/DI 1.3
Talk time: one 2-3 hours , a set 1-1.5 hours 
Play time : one 2-3 hours , a set 1-1.5 hours 
working distance: about 10m
Speaker power: 5mW, HD microphone
Standby time: one about 120hours, a set 60 hours
earphone battery: 40mAh for earphone , 350mAh for charging box for earphone full charge 1 time
Charging time: earphoe 1 hours, charing case 2 hours
Connect: support one match two ,connect two device
noise cancelling:adopt the advanced CVC6.0 active noise-cancellation
color: white, other colors need oem
weight: 39g n.w
package: gift box
pcs/ctn: 100pcs/ctn ,