MaximalPower RHF 617-1N 3.5mm RECEIVER/LISTEN ONLY Surveillance Headset Earpiece with Clear Acoustic Coil Tube Earbud Audio Kit For Two-Way Radios, Transceivers and Radio Speaker Mics Jacks Package Includes : one 3.5mm Receiver/Listen Only Surveillance Headset Earpiece Fits two-way radios (audio only), radio speaker mics, remote mics, MP3 players, and other audio accessories with 3.5mm earphone jack 100% compatible with all original equipment manufacturer (OEM) parts Output level: 72dB, Rated input power: 0.1W, Maximum input power: 0.2W, Output impedance: 32 ohms. Polyurethane jacketed, Heavy Duty Material, Superb Audio Quality, Rugged Design. Reinforced earphone clip provides cable retention and eliminates strain on earphone.