A $10 hand-powered LED light and battery bank

Device is operated by hand cranking it at any time during the day or night 

The charge is stored inside a battery

The ratio is that for every minute you crank, it provides 10 minutes light on the brightest mode

A full hand wound charge is of 16.5minutes 

This gives 1.1 hours of light on high mode or 2.5 hours of light on low mode

When more light is needed, it can be recharged by winding again

The larger version costs between $18-20 and generates more than 15 hours of light with a 45-minute charge

No limit on how many times you can charge

Sui Dhaaga: Made in India

Director: Sharat Katariya

Starring: Varun Dhawan, Anushka Sharma, Raghubir Yadav

3.5/5