Features:
Wireless receiver for Takstar WPM-200 wireless system, 50 meters effective range.
UHF frequency band, 6 selectable channels to match your need better.
Low power consumption design for long time usage.
With a backside clip for fixing it onto the top of trousers.
Comes with a earphone for convenient usage.     

Specifications:
Operating Current: 50mA±20mA
S/N Ratio: >50dB
Sensitivity: S/N 12dB 3uV
Frequency Response: 30Hz-18kHz
Stereo Separation: >50dB
Power Supply: 2 * 1.5V AA Battery (NOT included)
Item Size: 11 * 6.5 * 2cm / 4.3 * 2.6 * 0.8in
Item Size: 110 * 65 * 20mm / 4.3 * 2.6 * 0.8in
Item Weight: 87g / 3.07oz (excluding batteries)
Package Weight: 123g / 4.34oz

Packing List: I468-3
1 * Receiver
1 * Earphone

Note:
Products of the same brand but different frequency bands are not interchangeable.