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BOYA BY-WM8 UHF Dual Wireless Lavalier Microphone Systerm Lav Interview Mic 2 Transmitters & 1 Receiver for DSLR Video Camerao

Overview
The BOYA is an UHF Dual-Channel wireless microphone system, designed for ENG, EFP, DSLR video, and dual-Channel can work with one transmitter or two transmitters, perfect for interviews as well.
Ideal for interviews, ENG/EFP, DSLR Video etc. Dual-channel wireless receiver. 48 UHF channels.
Selectable STEREO/MONO mode. Plug and record functionality. Mic and Line-in.
Programmable mute function. More than 6 hours continuous operation.
Operation range can reach up to 100m(300\') (without obstacle). Power supply: 3pairs of AA batteries (Not Included).

Specifications:
System
Oscillator type: PLL Synthesized Control Oscillator
Carrier Frequency Range: 584 MHz-608 MHz (Transmitter A)
576 MHz-599 MHz (Transmitter B)
Frequency response: 60Hz-15 KHz+/-3 dB
Operating temperature: 14°F to 122° F (-10℃ to +50℃)
Storage temperature: 14°F to 131°F (-10℃ to +55℃)
Transmitter
RF output power: 20mW
Antenna: flexible
Spurious emission: 250 nW or less
Audio input connector: 3.5mm mini jack
Audio input level: 600 mV-2000 mV
Reference deviation: ±7KHz (-60dBV, 1KHz input)
Input frequency range: 20 Hz-20 KHz
Dimensions: approx. 7.0x2.6x1.1"(17.7x6.7x2.9cm)
Weight: approx. 95g without batteries
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Receiver
Antenna: flexible
Audio input connector: 3.5mm mini jack
Signal-to-noise ratio: 80 dB
Distortion: 0.8% (-60dBV, 1KHz input)
Earphone output level: 60mW, 32 Ohms/1KHz
Audio output level: 120 mV
Dimensions: approx. 7.7x3.1x1.1"(19.6 x 8.0 x 2.9cm)
Weight: approx.130g without batteries
Lavalier Microphone
Transducer: back electret condenser
Polar pattern: Omni-directional
Frequency Range: 35Hz ~ 18 KHz
Signal / Noise: 74dB SPL
Sensitivity: -30dB +/-3dB / 0dB=1V/Pa, 1 kHz
Connector: 3.5mm locking mini plug
Length: approx. 1.2m (4\')

Package Includes:
1 x Receiver
d 2 x Transmitters
2x Lavalier Microphone
1x Stereo 3.5mm imni plug cable
1x XLR output cable
2x Microphone Holder Clip
2x Windscreen
1x Shoe mount adapter
2xBelt clip
2 x Free Windshield muff (gift)
1 x Instruction Manual (In English)