BOYA BY-WM4 Pro K1 Portable 2.4G Wireless Microphone System(One Transmitters + One Receiver) with Hard Case for DSLR Camera Camcorder Smartphone PC Tablet Sound Audio Recording Interview

Features:
Digital wireless microphone system(one transmitters + one receiver), compatible with smartphones, DSLR cameras, consumer camcorders, PCs, etc.
Adopts 2.4G wireless technology, with strong anti-interference ability and high performance; up to 50m(164ft) operation range(without obstacle).
Omnidirectional lavalier microphone for clear sound recording, suitable for interviews, audio recording, video recording, etc.
Standard camera shoe mount and backside clip included, which allows you to mount the transmitter and receiver conveniently.
Lightweight and compact for easy carrying, and comes with hard case for convenient storage and carry about.

Specifications:
RF Modulation: GFSK (Gauss Frequency Shift Keying)
Frequency band: 2.4G (2405-2478MHz)
Frequency response: 35Hz-14KHz±3dB
Signal/Noise: 84dB or more
Distortion: 0.05% or less (32ohm, 1 KHz, 65 mW output)
FR output level: 3mW
Earphone output level: 32hom, 65mW
Reception sensitivity: -90dB+/- 3dB / 0dB=1V/Pa, 1KHz
Audio input connector: 3.5mm mini jack
Operation range: 50m (164 ft)(without obstacle)
Power requirement: 2 * AAA battery(not included)
Consumption power: Transmitter: 3V/70mA
                   Receiver: 3V/70mA
Transmitter & Receiver Size: 4.5 * 7 * 3.5cm/ 1.8 * 2.8 * 1.4in
Transmitter & Receiver Weight: 47g/ 1.7oz(without battery)

Note:
The smartphones and stabilizers showed in the picture are not included.

Package List:
1 * Transmitter
1 * Receiver
1 * Lapel Microphone
1 * 3.5mm to TRS Audio Output Cable
1 * 3.5mm to TRRS Audio Output Cable
1 * Cold Shoe Mount
1 * Hard Case