MH-73A4B Submersible Radio Microphone Handheld Microphone for YAESU ALINCO Standard Horizon Features: - Microphone for YAESU - IPX7 Waterproof Speaker/Microphone - With clip on the back 360 deg swivel; - IPX7 waterproof underwater (1m/3.3ft depth) for 30 minutes - Convenient PTT button in use - Front speaker and microphone for clear sound - Waterproof port with unique R tube thread. Insert the connector into the walkie-talkie and tighten before transmitting Suitable models: - For ALINCO: DJ-G7 - For YAESU: VX-6R, VX-7R , FT-270R and FT-277R - For Standard Horizon: HX40E, HX210E, HX380 and HX400IS Specifications: - Waterproof: IPX7 (water depth 1m/3.3ft and 30 minutes) - Microphone type: electret condenser - Microphone impedance: le; 680 Omega; - Speaker Rated Power: 0.5W - Speaker Impedance: 4 Omega; 15% - Dimensions: 60 x 37.5 x 85mm/2.4 x 1.5 x 3.3" (WxDxH) - Weight: 150g/0.3lb Package includes: - 1 x Microphone