1.COMPATIBILITY-compatible with Motorola CLP1010e/ CLP1080e/ CLP1083e/ CLP1040e/ CLP107e/ CLPe107/ CLP446/ CLPe446/ CLPe Plus Series portable radio. (Not work with CLP1010/1040/1060/1080 models) Tips: please check the plug before purchasing. 2.ACOUSTIC TUBE EARBUD-with replaceable covert acoustic coil tube and soft mushroom in-ear earbud, which can be replaced earmold or other earpiece tube when needed. Ensure clear sound received and keep communication private. FBI secret agent wear style, it is ideal choice for police surveillance kit. 3.PTT/PUSH-TO-TALK-with built-in mic and push-to-talk button, the PTT microphone is easy to open and connect with your partners quickly. The high quality noise cancelling microphone enable voice to be transmitted clearly even in noisy environments. 4.ADJUSTABLE CLIP/DURABLE CABLE-made of upgrade material, the radio headphone PU cable has high flexibility and toughness, anti-tensile and anti-bending, not easy to break but also waterproof and moisture-proof. Lead length is long enough and durable. The attached metal clip has a strong bite force which can hold your clothes or straps firmly and tightly and wouldn't fall off easily when you moving.