Track and perfect your swinging technique with the TomTom Golfer 2, a wrist-worn device that measures your movement thanks to a clever in-built motion sensor and gyroscope. With a simple glance, see a range of handy stats such as how far you’ve struck the ball, automatic scorecard and a detailed analysis once you’re done. It even informs you of hazards and is water resistant to 40m, just in case you ever have to retrieve your balls from the sea.