The N-ear 360 earpiece is designed by Denmark's leading in-ear experts to be the most comfortable, covert and best sounding earpiece for 2-way radios. The N-ear 360 is trusted by high-performance security teams around the world. The N-ear 360 3.5mm can be used in the following ways: Connecting to Speaker Mics - Simply plug in your N-ear 360 earpiece directly into your speaker mic audio port. Connecting to Existing Earpiece Kits - To connect the N-ear 360 3.5mm to an existing earpiece kit, you will need to have an adaptor (part # AD-AT-3.5). See the Connecting to Radio - To connect your N-ear 360 3.5mm to a radio, you'll need to have the Choice PTT/mic. Simply plug your 360 into the Choice PTT/mic. and then connect to your radio. At the time of ordering your Choice PTT/mic. you will tell us the radio model you are trying to connect to. See the "Wireless PTT" page. WHAT'S IN THE BOX? 1 x N-ear 360 Earpiece 1 x Cable Clip 1 x Small Open Ear Tip 1 x Medium Double Flange Ear Tip 2 x Ear Wax Filters 1 x End-User Zipper Case (Black) 1 x User Guide