(Image credit: Fitbit) Fitbit Ace 2: Functions

Sure, it lacks the immediate gratification of the seeing a Disney character spring to life and make signature noises, as with the Neo smartwatch, but it really engaged our mini tester and days later she was still keen to grow her plant and launch that rocket. Similarly, you can grow a happy plant on another face, which gets longer and opens its eyes the more steps you manage. We found it really easy to customise the watch face and our young tester was particularly excited by one face, where you can make a rocket take off by clocking up a certain number of steps.

Despite the lack of colour, there is some design fun to be had, with lots of different clock faces to choose from via the companion app.

The watch’s greyscale touchscreen may be a far cry from Vodafone and Disney’s Neo rich colour display, for example, but it has a low profile and makes for an impressive battery life. The Fitbit Ace 2 has a backlit OLED display that responds to natural swiping and scrolling. (Image credit: Fitbit) Fitbit Ace 2: Display

Fitbit ace 3 charger