Features:
UHF wireless acoustic transmission system， 1pc transmitter + 1pc receiver.
Preset 2 optional channels， and effective range is up to 50 meters.
One transmitter can be operated with multiple receivers within the operating range.
Independent volume control on the receiver helps you adjust the receiving volume freely.
Complex interference-free circuit enables 2 sets to use simultaneously without mutual interference.
PLL frequency synthesis technique for stable signal transmission.
Low power consumption design for long time usage.
Comes with a lavalier microphone， a earphone， a 3.5mm to 3.5mm conversion cable and a 6.35mm adapter plug.
Suitable for wireless tour guiding， simultaneous translation， audio-visual education， etc.???? ?

Specifications:
Frequency Control: Phase Locked Loop(PLL)
Frequency Range: 433MHz
Effective Range: 50 Meters
Modulation Mode: FM
Receiver Frequency Response: 60Hz-15kHz
S/N Ratio: ＞45dB
Power Supply: 2 * 1.5V AA Batteries (not included)
Item Size: 6 * 9 * 2cm / 2.4 * 3.5 * 0.8in (Transmitter); 6 * 9 * 2cm / 2.4 * 3.5 * 0.8in (Receiver)
Item Weight: 167g / 5.9oz (Transmitter + Receiver， excluding batteries)
Package Size: 29 * 21 * 5cm / 11.4 * 8.3 * 2in
Package Weight: 542g / 19.1lb

Note:
Batteries are not included.

Package List:
1 * Transmitter
1 * Receiver
1 * Lavalier Microphone
1 * Earphone
1 * Conversion Cable(about 1 meter)
1 * Adapter Plug
1 * User Manual (English !#!amp!*! Chinese)