Use the Chirp wireless beacon for outdoor geocaching. This affordable, durable, and waterproof design can communicate with any compatible Garmin handheld device. The chirp will store hints, coordinates, count the amount of visitors, and confirms if the cache is nearby. The units battery lasts up to one year and is protected by a password.In The Box- chirp- CR2032 lithium coin cell battery- Small adhesive disc- InstructionsFeatures- Unit dimensions, WxHxD: 1.3" x 0.9" x 0.3" (3.3 x 2.3 x 0.7 cm)- Weight: less than 1.0 oz (28 grams)- Waterproof: yes (IPX7 - 1 meter for 30 minutes)- Battery: up to 1 year with continuous use; user replaceable battery; message appears on your compatible Garmin device when battery is low- Range: up to 32 feet (10 meters)- Password protectionTips:- Do not mount the chirp inside a metal container- Do not bury the chirp- Do not put the chirp in water- A compatible Garmin device should detect the chirp within 10 m. For maximum transmission range, allow the chirp to have an unobstructed view in all directions.