Ever needed to grab a bottle of water only to find the vending machine you've spotted is without power? The folks in Japan have, especially in the period immediately following natural disasters. The solution? Easy. A hand-cranked vending machine that still affords you the option of your desired food or beverage even during an emergency when the power is down. Sanden, a Japanese vending outfit, has developed the system that would allow the country's 5.5 million machines to run sans electricity or solar power and rely on good ol' fashioned muscle. You'll just need to dish out 70 cranks, in addition to the cost of your selection, and in about 20 seconds the kit powers on. The machine shown here will dispense around seven bottles before needing a full re-crank and there's no word on what the additional cost per vending unit will be. For look at the tech in action, hit the video above and prepare for a bicep workout.