Designed to keep your GPS close to you and accessable when you need it. The Garmin Neck Lanyard has push button to release the unit quickly. Attaching it back to the lanyard is simple just slide it back into the attachment clip and it is securly locked back in. This lanyard works with units that have the belt clip button on the back of the unit. Compatible with the Astro 220, GPSMAP 60 Series, eTrex Legend, Vista, and Venture Color GPS units, Geko series, and Rino 100/500 series units.