No Retail Package

Features:
*contain high-capacity rechargeable polymer battery ,and 5v DCpower supply ,with 100-240vAC adapter.
*no signal or long time no working ,headphones will keep in automatic sleep function.

Function:
*headset for the p3
*network calls function
*wireless bluetooth technology
*bluetooth v2.0,csr blue core 4
*frequency:2.4Ghz-2.4835GHz,ISM Band
*rechargeable battery li-polymer
*open space distance :straight line 30m
*high-frequency sensitivity:>-7.5dB

Color:black
Net weight:44.5g(with battery)
Packing weight:135g
Packing size:194*165mm