Hammerhead Karoo 2

£359 / stuff.tv/karoo2

For ages cycling computers have been held back by outdated tech… but Hammerhead’s sharp screen really is a gamechanger, and effectively running a tiny Android phone inside a custom case feels like a no-brainer. The 3.2in display is a delight, helping you spot new trails branching off from routes, all with the nostalgic feel of an early smartphone. Navigating with swipes and taps is intuitive (and works with gloves), and the software is constantly updated with helpful nips and tucks. Stuff says ★★★★★

At last, a bike computer for the 21st century – Wahoo and Garmin appear to have missed a trick here