We note Garmin's new Instinct 2 Solar smartwatch is getting quite a bit of attention online.

It is a rugged GPS smartwatch with extensive fitness features that will be loved by middle-class outdoorsy types.

The big differentiator for I2S is its solar-powered battery. It promises (in theory) unlimited battery life and you never have to recharge your watch again. In the real world, of clouds and rain and stuck at an office desk, we think it probably means 10-30 days without a recharge. That is jolly good, but not quite unlimited.

At US$350-450 retail, this is a premium device, entering Apple Watch territory.

We applaud Garmin for its solar innovation, particularly in these green times, and it will no doubt find a solid niche following among Garmin's loyal sports fans in North America and Western Europe.