The crankmonkey allows users to make an emergency call from flat phones are just two minutes of cranking and will power a Petzl head lamp for an hour from one minute of cranking; truly instant power. It will work with virtually any 5V device including GPS, Sat Phones, avalanche transceivers, smartphones, handheld video cameras and much more. Featuring a 32:1 gearing system that allows users to generate power at a comfortable speed, the crankmonkey is ergonomically designed for easy use and is made from aluminium making it strong and robust.