The Forever Calculator. A$12.95. Well we’ve had the flashlight, so why not a calculator? And why not a Forever TV for that matter? Apart from the fact that the tube would fall out. Quite quickly.
No more flat batteries with this little gem. Shaking the calculator causes a high strength magnet to pass back and forth between a wire coil, Creating a magnetic induction current which charges up the calculator giving approximately 10 miniutes of usage time from about 10 seconds of shaking.
