Sigma BC 23.16 STS

The Sigma BC 23.16 STS is the old-school bike computer for riders with zero interest in navigation, training analysis or Strava segments. For 50 euros you get speed, distance, ride duration, altitude, temperature and calories — 23 functions in total — and that's it. No GPS, no Bluetooth, no app, no account. To be fair, in 2026 that can feel like a benefit. No software updates, no privacy concerns, no subscriptions. But it also means measurements happen via a magnet on your spoke and a sensor on the front fork, and you have to install and calibrate it once to your wheel circumference.

That's a five-minute job, but it has to be right or your distance will be off. For anyone who rides a single bike and leaves the sensor in place, that's a one-time setup. The 1.7 inch monochrome display shows two data fields at a time and is clearly readable in sunlight. The wireless ATS link between sensor and head unit is reliable up to about a meter. Where this Sigma fails is the moment you want to navigate — there is no trace of a GPS chip in this unit.

For the Dutch Knooppunten network that honestly doesn't always matter, because the cycle network is so well signposted you rarely need a computer to find your way. As a city commuter who just wants to know how fast and how far they're riding, this is fine. But the moment you want to ride an LF route through Belgium or explore a new parcours, you'll need a phone mount or a GPS computer. Compared with the Sigma ROX 4.0, the price gap is just 20 euros, and with the ROX you get GPS and a bigger screen — for most cyclists, that extra twenty is well spent. The BC 23.16 STS remains recommendable for purists, budget buyers and anyone who deliberately wants to stay digitally minimal on the bike.