UV Monkey
Get the most out of your solar gear! This nifty little gadget has a chemical compound in its core which changes colour to indicate the UV intensity of the sun - the stronger the colour - the more effective your solar devices will be at charging.
UVmonkey will even keep you safe in the sun - if the colour on the chart shows as strong, put up your parasol and get in the shade!
Made from the same tough, rubberised materials as the solarmonkey and powermonkey-eXplorer - chuck it in your beach bag and head out into the sunshine!