Feature: -- Light duty remote water proof speaker mics for two way radios. -- Features a 3.5mm accessory jack for connecting an earphone to the unit. -- 360 degrees swivel back clip, easy and convenient to be fixed. -- Suitable for various two way radios with changeable plug. Specification Speaker -- Dimension (mm):￠36 -- Sensitivity: 112±4dB -- Impedance: 8Ω -- Rated output power: 1W -- Peak power output: 1.5W Microphone -- Dimension (mm): ￠9.7*4.5 -- Sensitivity: -38±3dB -- Frequency:1kHz -- Impedance:2.0V/2.2KΩ -- Operation voltage:1.1-10V Wire -- Dimension (mm)： ￠4.2mm L=2200mm（180+220+180） -- Durable Temperature -40～100℃ -- Material： PU90A