Item Type: Acoustic Tube HeadphoneMaterial: ABS, PUInterface: 3.5mm SoundCable Length: Approx. 100cm/3.3ftCompatible Models: for Motorola VX 180 VX 210 VX 231 VX 261 VX 264 VX 351 VX 354 VX 410 VX 424 VX 450 VX 451 VX 454 VX 459 EVX 261 EVX 531 EVX 534 EVX 539 etc.Package List5 x Headset Microphone Assembly5 x Headset Tube5 x Replacement EarbudsAll data are measured manually, and there are certain errors in the measurement results.1COMPATIBLE: Acoustic tube headphone compatible for Motorola Vertex Radios walkie talkies: for VX 180 VX 210 VX 231 VX 261 VX 264 VX 351 VX 354 VX 410 VX 424 VX 450 VX 451 VX 454 VX 459 EVX 261 EVX 531 EVX 534 EVX 539 etc. 2TRANSPARENT: Air acoustic tube headset with transparent sound tube design, is a covert headset, support PTT (push to talk), with built in microphone. 3CLIP ON: Air tube earpiece is clip on, you can clip it to your shirt and start using your radio device for discrete and easy communication. 4REDUCED RADIATION: Transparent sound tube earpiece is high quality while reducing electronic radiation, perfect for surveillance and security in work environments that require discreet communication. 5SUITABLE PLACES: Walkie talkie earpiece is perfect for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncers, warehouses and noisy environments.