For anyone running an air tent or awning, the Tempest takes the guesswork out of inflation. Its two-stage motor shifts a lot of air fast to begin with, then settles into a slower, more precise flow as the beams near full pressure, with an LED screen showing exactly where you're at and an automatic cut-off so you don't risk over-inflating. It comes with a set of adaptors covering most other inflatable tents and self-inflating mats with a cyclone valve, and it doubles as a USB power bank when you're not pumping.