The Garmin Rino Ear Bud w/ Ptt Mic allows you to stay in constant contact with your companions without disturbing your neighbors or the wildlife. The Rino GPS units employ a five-mile radius two-way radio signal for great communication capability, but when you're hunting babies you need to eliminate the squawk or risk losing your trophy. Work with both hands while you monitor conversation, or complete your backcountry Secret Service costume. This Garmin accessory also works well in situations where those around you don't need to hear your conversations, like chair lifts and yoga classes. The Earbud works for all Garmin Rino series models.