Features: Compatible with Motorola radios featuring a 2-pin plug. CLS series: CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C, CLS1450CB VL50CP series: CP88, CP040, CP100, CP110, CP125, CP150, CP200, CP250, CP300 CT series: CT150, CT250, CT450, CT450L FDC series: FD-150A, FD-450A, FD-160A, FD-460A GP series: GP2000, GP2100, GP300, GP308, GP68, GP88, GP88S, GP3188 P series: P040, P080, P1225, P1225LS PRO series: PRO1150, PRO2150, PRO3150 RDX series: RDV-5100, RDV2020, RDU2020, RDU2080DD, RDU4100, RDU4160D, RDV2080D, RDV5100 Spirit Series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, SU220 VHF/UHF Spirit, Lo Spirito Pro, Spirit Pro+, Spirit HP 10 SP series: SP10, SP21, SP50+, SP50 Spirit MU series: MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVS TTN series: XTN446, XTN500, XTN600 Other series: LTS2000, VL130, PMR446, ECP100, PR400, mag One BPR400, EP450, AU1200, AV1200 VOX is an automatic voice transmission feature that eliminates the need to press a button during a call. PTT refers to the function of pressing and holding the PTT button to make a call. Package Includes: 1 x Microphone Headset Specifications: Material: Plastic + Metal Cable Length: Approx. 150 cm / 47.24 inches Note: 1. Please allow 1-2 mm error due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the image may not reflect the actual color of the item.