Features: 2 Wire Design With Palm Size Ptt Lightweight Earphone, Rubber Ear Tip Low Profile, Flexible, Transparent Acoustic Tube Quick Disconnect Earphone Adapter For Easy Replacement Of Any Component Flexible, High Grade Kevlar Cable For Demanding Applications Specification Speaker Dimension (Mm): ?15(Independent) Sensitivity : 106&Plusmn;4Db Impedance: 220Ω Rated Output Power: 0.5W Peak Power Output 1W Specification Microphone Dimension (Mm): ?9.7*4.5 Sensitivity: -38&Plusmn;3Db Frequency: 1Khz Impedance: 2.0V/2.2KΩ Operation Voltage: 1.1-10V Wire Material: Pu80A Fit Motorola Radio: Gp Series: Gp140, Gp240, Gp280, Gp320, Gp328, Gp329, Gp330, Gp338, Gp339, Gp340 Atex, Gp360, Gp380, Gp380 Atex, Gp540, Gp580 Atex, Gp640, Gp650, Gp680, Gp680 Atex, Gp1280 Ptx Series: Ptx700, Ptx760, Ptx780 Ht Series: Ht750, Ht1250, Ht1250 Ls, Ht1500 Xls, Ht1550, Ht1550 Xls Mtx Series: Mtx850, Mtx850 Ls, Mtx900, Mtx950, Mtx960, Mtx8250, Mtx8250 Ls, Mtx9250 Pro Series: Pro5150, Pro5350, Pro5450, Pro5550, Pro5460, Pro5750, Pro7150, Pro7350, Pro7450, Pro7550, Pro7750, Pro9150 Motorola Portable: Pr860, Tetra Mtp810 Ex Fit Hytera Radio: Hyt Tc-980