There are two types of smartwatches around at the moment: those with a colourful touchscreen – similarly to what you'd find on your phone – and those which combine a regular analogue watch with smart features. These are known as 'hybrid' smartwatches; some have the smart bits almost completely hidden, while some give you information via a small integrated display (the Withings ScanWatch is a good example of a hybrid watch). While a fully-fledged smartwatch can do a lot more, that juice-guzzling screen results in shorter battery life. Hybrid watches benefit from longer battery life with some even having separate cells for the watch and smart features. Since they're not true smartwatches, you'll find hybrid watches from Withings and others in our separate fitness tracker chart.