Version:Dual-mode V4.2, Ultra lowpower
consumption
-Frequency:2.4GHZ
-Bluetooth Distance：10M
-Earphone:internal 45mAh rechargeable Li-ion battery
-Box Battery:400mAh
-Storage box charging time: 1.5hours
-Call time:5.5 hours
-Music time: about 5 hours
-Stand-by time:＞2800hours
-Support protocol:HFP, HSP, A2DP, AVRCP
-Receiving sensitivity: -85dbm.
-Speaker:∅8/Graphene diaphragm
-Frequency Response: 20-20KHz