Meet the x2 Sport: an underwater propulsion system you can wear on your wrist to help you go further in the water. The system consists of an adjustable arm mount, an analog throttle, a hydra thurster, and a control system with an integrated battery pack.
This wearable system has a top speed of 6 mph. It runs for 15 minutes at top speed. You also get a 24000 mAh battery. More information is available on Indiegogo.