Most "smart" products add in app compatibility and call it a day. The SipaBoard Smart Paddleboard is intelligent in several different ways. For one, it features an electric jet propulsion engine built into the board that provides up to 3.5 knots of assistance. It's also inflatable, so it's easy to pack to and from the water, and the jet doubles as a compressor that can inflate the board in six minutes. And yes, it's smart in the common sense, too, with a Bluetooth 4.0 connection that lets you control the speed from your phone or watch and gives you an alert when the battery hits 50%. Yet there's really no need to put your electronics at risk, since there's also a wireless control built right into the paddle.