Solar charging wastes more space than it uses. The Vertical is also complicated to use and the heart rate measurement is inaccurate. Some of the analyses are very narrow. On the other hand, the watch can be paired with many sensors and offers various modes and connections for sports fans.

The Vertical from Suunto (there is also a titanium solar version) is a wrist computer that can do virtually everything - and with a Finnish, clean design. As always with these devices: You have to familiarise yourself with the operation. There are useful accessories. What's nice is that the Vertical is the lightest of the watches presented here...