Compatibility: Compatible with Motorola Connector M1: CP88, CP040, CP100, CP140, CP150, CP160, CP200, CP1300, EP450, CT150, CT250, CT450, GP200, GP300, GP308, GP68, GP88, BC120, GTI , LTS2000, PR400, P040, P080, P110, P1215 ,P1215LS ,PRO3150, BPR40, CP1600, DP1400, DEP450, GP3688, GP3188, XIR-C2620 M1A: SP10, SP21, XTN446, XTN500, XTN600, PRO400, PRO1150, PRO2150, DTR650, DTR2350, DTR2450, XU1100, XU2600, GT1, CP100, PMR446, VL50 | Easy to Use: This 2.5-3.5 mm Two Way headset from Decibullz is easy to use and adapt to the needs of your profession or personal needs. This headset is a quick disconnect surveillance earpiece that can be combined with custom earplugs or used as is. This two way radio acoustic tube earphone kit with walkie talkie surveillance earpiece and microphone are used by law enforcement officers, security companies, casinos, retailers and much more. 2-Pin 2.5MM + 3.5 MM threaded audio jacks. | Comfortable Fit: Decibullz Two Way headset can be worn and rotated for the left or right ears. Wear this comfortably headset earpiece without worry, reinforced earphone clip provides cable retention eliminating strain on the earphone. | High Quality Speaker Output: Decibullz Two Way radio headset provides a premium clear sound through the clear acoustic tube even in traditionally loud environments. This two way headset helps to provide a perfect clear long range distance communication with in-line PTT button & microphone to keep communication fluid. | Customizable Upgrades: Decibullz two way headpiece comes with standard silicone mushroom earpiece adapter. If you are seeking a customizable fitted earpiece for a profession Decibullz had a wide arrange of customizable moldable fitted earpieces the seamlessly concept to this listen only headset. Where you seek for an awareness compatibility or isolation there is an earplug that works for you.