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Boya WM4 Pro Wireless Microphone in Bangladesh BOYA WM4 Pro consists of a bodypack transmitter, a camera-mountable wireless receiver, an omnidirectional lavalier microphone, a camera shoe mount, 3.5mm(1/8") TRS Connector, 3.5mm(1/8") TRRS Connector, a carrying case, foam windscreen, and a microphone clip. The receiver is built with mic and headphone output jacks. The bodypack transmitter includes a MIC jack and LINE IN jack.The operation range is 50m (164ft)  can use in many situations.BOYA WM4 Pro Compatible with most of Audio/Video equipment, such as smartphones, tablets, DSLR, small recorder, Audio Recorder, PC, etc.Compact and lightweight bodypack transmitter and receiverElectret condenser, omnidirectional lavalier microphone Key Feature of Boya WM4 Pro:  Clear recording soundCompatible with smartphones, DSLR cameras,Consumer Camcorders, PCs etc.Light and compact for easy carryingOmnidirectional lavalier microphoneEasy to useHard case includedstandard camera shoe mount and clip includedUp to 50m (164ft) operation range (without obstacle)Power Supplied by two AA batteries (not included) Specifications：  RF Modulation: GFSK (Gauss frequency Shift Keying) Frequency band: 2.4GHz (2405-2478MHz) Frequency response: 35Hz-14KHz±3dB Signal/Noise: 84dB or more Distortion:  0.05% or less (32Ω,1 KHz,65mW output) RF output level: ≤ 3mW Earphone output level: 32Ω,65mW Reception sensitivity: -90dB +/- 3dB / 0dB=1V/Pa, 1kHz Audio input connector:  3.5mm mini jack Operation range:  50m (164ft) (without obstacle) Power requirements:  3V DC (Two AA size batteries)   Dimensions:  Transmitter: 45mm x 70mm x35mm (W/H/D)  Receiver: 44mm x 70mm x35mm (W/H/D) Weight:  Transmitter: 47g(Without battery)  Receiver: 47g (Without battery) Package Contents:1* BOYA BY-WM4 Pro Transmitter and Receiver1* Lavalier/lapel microphone1* 3.5mm to TRS audio output cable1* 3.5mm to TRRS audio output cable1* Cold-shoe mount1* Hard case1* User Guide1* Foam protector for the lav micManufactory Original Package..