color to choose ; gray， blue， black
Working voltage: 3.7 V
Working current: 50mA
Lithium battery capacity: 250mAh
Continuous working hours: 4.5 hours
Input interface: 3.5mm
Size Headphone : diameter 30mm
Size Transmitter: 20.4 x 16.6 x 4 cm ; 200 g
Frequency 20Hz - 20kHz
RF Frequency : 2.4GHz
Receiving scope and distance: 8m， 360 degree
Support OS: XP， Vista， Win7
*No Mic
12 working days delivery lead time from Malaysia
