abcGoodefg&reg; 2 PCS 3.5mm RHF 617-1N x 2 Surveillance Plug Receiver/Listen Only Audio Earpiece for 2-Way Radio Transceivers and Radio Speaker Mics 1 Pin Fits two-way radios (audio only), radio speaker mics, remote mics, MP3 players, and other audio accessories with 3.5mm earphone jack. Universal 3.5mm plug fits two-way radios, radio speaker mics, similar devices; works with standard, Motorola, Kenwood, Baofeng, Incom, Yaesu, Alinco etc. Enhanced 3.7mm cabling, high quality plastic housing, rotatable metal back clip, Clear, hypo-allergenic acoustic tube,include ear bud. Ideal for police, military, construction, security, restaurants, hotels, bouncer, warehouses, and most tough working environments.