2 Pack Compact Speaker Mics with Reinforced Cable for Motorola Vertex Radios VX-210 VX-231 VX-261 VX-264 VX-351 VX-354 VX-424 VX-451 VX-454 VX-459 EVX-261 EVX-531 EVX-534 EVX-539 Shoulder Microphone

Commountain Compact Remote Speaker mic/Microphone with Reinforced Cable, 3.5mm Audio Jack and Rugged Swivel Clip Features: -Compact Construction, Housing Made of High Impact Engineering Plastic -Omni-Directional Condenser Microphone & Electret Speaker Transmit High Quality Sound Even in Loud Environments -PU Cable Reinforced by Kevlar Fiber & High Tensile Strength Coil Cord, Long-Life Design -Rugged Swivel Clip -3.5mm Audio Jack Available for Listen Only Earpiece/Headset Dimension Specification: -Dimension of Microphone Housing: H 2.83xW 1.97 inch -Cable Length without Stretching: approx 23 inch -Cable Length with Full Stretching: at least 43 inch -Coil Cord Length: 9.4 inch -Cable Diameter: 1.65 inch Speaker Electric Specification: -Impedance: 8?15% at 1.2KHz 1.0V -Rated Input Power: 1.0W -Max Input Power: 1.5W -Output S.P.L.: 85dB3dB Microphone Electric Specification: -Type: Omni-Directional -Output Impedance: 2.2K?10% -Sensitivity: -43dB2dB (1V/Pa) -Frequency Range: 50Hz-20KHz Compatible with Vertex & Motorola Radios As Follow: VX-160 VX-180 VX-210 VX-231 VX-261 VX-264 VX-351 VX-354 VX-410 VX-420 VX-424 VX-450 VX-451 VX-454 VX-459 EVX-261 EVX-531 EVX-534 EVX-539