1. Universal Compatibility: This walkie talkie is compatible with multiple 2-way radios and other devices that require a 5/16-inch dual-pin plug (standard 2-pin ). 2. Hands-Free Convenience: Shoulder-mounted design of this speaker Mic allows for hands-free operation, perfect for outdoor activities or jobs that require both hands to be free. 3. and Weather-: This radio Mic is made with high-quality materials to withstand harsh weather conditions and tough environments. 4. Clear Audio Quality: Built-in speaker and microphone in this two way radio provide clear audio quality for easy communication. 5. Easy-to-Use Controls: Large push-to-talk (PTT) button and volume control knob of this remote speaker microphone for quick and easy adjustments. PMMN4013A 2-Pin Shoulder Remote Speaker Microphone Weatherproof Two Way Radio Walkie Talkie Parts Accessories for Radio Product weight: 154g Product size: About 140x80x70mm/5.51x3.14x2.75inch XTN series: XTN446, XTN500, XTN600 XTN XV series: XV1100, XV2100, XV2600, XV4100 XTN XU series: XU1100, XU2100, XU2600, XU4100 XTN AX series: AXV5100, AXU4100 series: CLS1110, CLS1410, CLS1413, CLS1450, CLS1450 C, CLS1450 CB, VL50 Spirit series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, Su220, Spirit Pro, Spirit Pro+, HP10 Spirit series: MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24 CVST Spirit MV series: MV11, MV11C, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22, MV22CV, MV24CVS CP series: CP88, CP040. CP100, CP110, CP125, CP150, CP200, CP250, CP300 GP series: GP2000, GP2100, GP300, GP308, GP68, GP88, GP88S SP series: SP10, SP21, SP50+, SP50 CT series: CT150, CT250, CT450, CT450LS P series: P040, P080, P110, P1225, P1225LS Color: As own Material: Metal+Plastic Package Contents: 1 * Microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.