Commountain Heavy Duty Remote Speaker mic/Microphone:Features: -Compatible with Motorola 2 Pin Speaker Mics -Heavy Duty 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 Detachable (Replaceable) Swivel Clip -3.5mm Audio Jack Available for Listen Only Earpiece/HeadsetDimension Specification: -Dimension of Microphone Housing: H 3.05xW 2.35 inch -Cable Length without Stretching: approx 17 inch -Cable Length with Full Stretching: at least 40 inch -Coil Cord Length: 9.05 inch -Cable Diameter: 1.9 inchSpeaker Electric Specification: -Impedance: 8?±15% at 1.2KHz 1.0V -Rated Input Power: 2.0W -Max Input Power: 3.0W -Output S.P.L.: 85dB±5dBMicrophone Electric Specification: -Type: Omni-Directional -Output Impedance: 2.2K?±10% -Sensitivity: -43dB±2dB (1V/Pa) -Frequency Range: 50Hz-20KHzCompatible for Motorola Radios As Follow: BC10 BC120 BC130 Mag one BRP40 BC90CP100 CP110 CP125 CP150 CP185 CP200 CP200D CP200XLS CP450 CT150 CT250 CT450 CT450LS CLS1110 CLS1410DTR410 DTR550 DTR650 DLR1020 DLR1060GP280 GP68 GP88 GP300 GP308 GP2000 GTI GTX LTS2000 MAG ONE P040 P080 P110 P1225 P1225LS PR400 PRO3150RDU2020 RDU2080D RDV2020 RDV2080D RDU4100 RDU4103 RDU4160D RDU4163D RDV5100 RMU2040 RMU2043 RMM2050 RMU2080 RMU2080D RMV2080 SP10 SP21 SP50XTN446 XTN500 XTN600 XV1100 XV2100 XU1100 XU2100 XU2600VL130 VL50Compatible for HYT Radio As Follow:TC446S TC500 TC600 TC610 TC620 TC700 TC700EXCompatible for TEKK Radio As Follow:XU100 XV100 XU1000 XV1000