World's first solar battery charger for cell phones

Japanese companies StrapyaNext and Tokyo Coil Engineering claim they developed the world’s first battery charger for cell phones based on solar energy. The charger comes in the form of a phone strap.

The device is 12.5 cm long and weighs 40 grams. It takes between 6 and 10 hours for a full charge with which you can talk for up to 40 minutes. StrapyaNext promises on the product page: “As long as the sun pours light and heat on the earth!” An AC adapter can get the job done in 3 hours.

The charger is available for $19 but for the time being, only Japanese cell phones are supported.