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The SolarBright torch seen below utilises modern solar technology with a traditional product. The solar panels are based on those used for years with calculators. The photovoltaic panels provide enough electricity to charge up efficient lithium batteries. In turn they provide 3.6 volts to power the three ultra bright LEDs.

The torch has three light modes. The first is the brightest and on this setting the fully charged batteries will keep the torch working for at least an hour. The second mode is slightly less bright and allows the torch to work for just over two hours. The third mode id a flashing light, useful for emergency situations.

The torch is also a clock and alarm. This type of product is aimed at the general public especially those who are interested in protecting the environment. The LEDs never need replacing and the batteries can be recharged in the region of a thousand times. Furthermore, as the torch is charged by the sun, recharging is free.

The simple suction cup can be used to secure the torch against a pane of glass (seen below). The sun light can then be captured by the solar panel. Alternatively, the torch can be placed on a flat or angle surface when recharging is needed.  This one way in which the torch design is innovative. The use of a solar panel and rechargeable lithium batteries are other innovations. The torch is also stylish and has been ergonomically designed to fit the hand comfortably.

Some calculators already use this type of technology. In the space below apply the same solar technology to another existing device. Explain why solar panels of this type should be used on your chosen device.