Garmin eTrex 32x

An integrated solar module, which charges even when the device is switched off, is designed to give Garmin's Etrex Solar GPS receiver almost unlimited battery life. And it works perfectly: even in changing weather, the battery level drops only slightly - by just 18 per cent on a twelve-day tour of Lapland, for example - thanks in part to the power-saving monochrome display without map display...