BOYA BY-WM4 || Wireless Lavalier Lapel Mic, Omnidirectional Mic System Audio Recording with Easy Clip On, 3.5mm Plug for Canon Nikon Sony DSLR Camera, Camcorder, iPhone 7 / 7 plus

• Specially designed for smartphone, tablet
• Also for DSLR, small audio recorders etc.
• 2.4 GHz digital transmission
• Simple mating for quick installation
• Round absorbing mosquito microphone is included

BOYA BY-WM4 is a 2.4GHz wireless microphone system, specially designed for iPhone, Ipad and most Android devices and tablets, but also works great with a DSLR camera, camcorder, computer, etc. It consists of a body-worn transmitter , a camera-mountable wireless receiver, a round-the-ring lavender microphone (mosquito), a camera mount, a 3.5 mm TRS cable, a 3.5 mm TRRS cable, a case, foam foam cover and a microphone clip. 

The receiver is equipped with a microphone and headphone output. The transmitter has a microphone input, and a line-in input. The range is 15m, and the system can be used in many situations. Compatible with most audio / video equipment such as smartphone, tablet, DSLR, pocket memory, audio recorder, PC etc.

Specification
RF modulation: GFSK (Gauss frequency Shift Keying) 
Frequency band: 2.4 GHz (2405-2478MHz) 
Frequency response: 35Hz-14KHz ± 3dB 
Signal / noise: 76 dB or more 
Distortion: 0.1% or less (32Ω, 1 KHz , 65mW output) 
RF output level: ≤ 2mW 
Headphone output level: 32Ω, 65mW 
Reception sensitivity : -85dB +/- 3dB / 0dB = 1V / Pa, 1kHz 
Connection for audio input: 3.5mm mini jack 
Operating range: 15m 
Current requirement: 1.5 V DC (one AA battery) 
Battery life: Transmitter: Approx. 3.0 hours Receiver: Approx. 3 hours 
Dimensions Transmitter: 60mm x 86mm x28mm 
Receiver: 60mm x 86mm x41mm 
Weight: Transmitter: 136g (Without battery) 
Receiver: 152g (Without battery)