chirp is a one-of-a-kind wireless beacon designed specifically for the outdoor adventures of geocaching. Affordable, durable and water resistant, chirp can communicate with, and be programmed by, any compatible¹ wireless-enabled Garmin handheld (sold separately). chirp stores hints, multicache coordinates, counts visitors and confirms the cache is nearby. chirp is password protected and has a battery life of up to 1 year. chirp can be programmed by any compatible wireless-enabled Garmin handheld to store geocaching hints and other information. When other geocachers arrive near your cache, they’ll be alerted that the cache is nearby, and then they’ll be able to access the hints you’ve loaded into chirp. And when you return, chirp will tell you how many visitors have been to your cache.