3.5mm Listen Only Earphone. Left Ear and Right Ear Medium Size Silicon Ear pier Open Ear Insert Earmolds are designed for use on two-way radio acoustic tube type surveillance earpieces Great for use in crowded or loud environments. This is designed to fit , , Icom, , Ritron and radios and Remote mic This model of the TC-617-1N listen only earphone is designed for law enforcement officers, firemen, EMTs ,Sports, Fairground and other who wear their radio with a microphone on their shoulder or clipped to their shirt. If your mic has a 3.5mm jack, this earphone will click into it, providing you with the ability to securely hear broadcasts without everyone else in the area over hearing. This is great when you are in a Fairground and do not want to bother other player but even better when you are making an arrest and do not want the suspect or others to hear every broadcast. The TC-617-1N listen only earpiece is the comfortable and secure way to privately listen to your radio. The Clear TC-617-1N Earphone is formed from high grade tubing, which is attached to a high output speaker that connects discreetly the shirt collar. Works with any radio, Remote mic, and speaker mic (3.5mm connector) Speaker Microphone for Systems Portables,With 3.5mm socket for earpiece Compatible with Speaker Microphone Models Number: -45 -25 -26 Compatible with Speaker Microphone Models Number: PMMN4013A PMMN4029 PMMN4015A PMMN4021A PMMN4022A PMMN4074 PMMN4024A PMMN4075 PMMN4076 PMMN4075 NMN6154B NMN6128C etc WORKS WITH 3.5MM EARPIECE JACK Fits two-way radios (audio only), radio speaker mics, remote mics, MP3 players, and other audio accessories. colour: Black + white Material: metal size: 0.8-2.5m Package Contents: 2*TC-617-1N Listen Only earphone 1* left and right Medium Ear- Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.