CASIO RUBIK’S X G-SHOCK

Committed cubists are never caught without a Rubik’s Cube to hand, but even the keenest puzzler would think twice about strapping one to their wrist. Built around the rugged GA-2100 with some colourful highlights to leave its design inspiration in no doubt, this special-edition ticker is shock-resistant and good for dunking down to 200m – handy if you’re into underwater solving. Functionality is suitably retro, with an alarm, stopwatch, countdown timer, world time and weekday indicator. That doesn’t exactly make it smart, but does mean the battery lasts around three years, which is about how long we’ve been trying to solve this bloody Rubik’s Cube…

£139 / g-shock.co.uk