Tile's Bluetooth trackers are already one of the best ways to keep track of easily-lost belongings. Tile Pro Series Trackers improve on them in several ways. First of all, their range is doubled to 200 feet, and the onboard speaker is twice as loud — up to 88 decibels. They're also waterproof, have a battery life of one year, and sport a redesigned proximity sensor that's even more accurate. Available in slate/graphite Sport or white/champagne Style models.