It’s called the Prospex Solar Speedtimer, and it’s fuelled by some niche racing history. The red and black colourway nods to ...

The Garmin Instinct 2 Solar is a rugged, GPS-enabled smartwatch with a literal ton of training modes, can last for over three weeks on a single charge, and is often on sale, making it a solid bargain.

The new Tissot PRC100 Solar utilises a groundbreaking solar-powered movement to harness light energy in new ways and keep your watch powered for longer with minimal effort.

My pick of the bunch is the 41 mm stainless steel Doppio with mesh steel bracelet and solar power. Priced at £399, the watch is driven by a rechargeable battery that is powered by both natural ...