Meet Ping: a super compact smart GPS locator that lets you keep track of your pets, kids, and valuable items. It is waterproof and has a 3-month battery life. It has a global range and works with iOS and Android devices. The check-in button lets you send your location to others with a simple push. Double tap to send a SOS alert in case of an emergency.
While Ping requires a cellular plan to work, you get 1 year of service for free. You can find out more on Indiegogo.