Four valve-cap sensors and a solar display that warns the moment a tyre loses pressure. Fits any car, no wiring.

Key specs • Sensors: 4 valve-cap, fit in seconds • Display: solar powered, sits on the dashboard • Alerts: low and high pressure, high temperature, fast leak • Range: monitors all four wheels live • Battery: replaceable in each sensor

In the box Display, 4 sensors, spanner, anti-theft nuts, USB-C cable

UK notes Correct pressure improves fuel economy and tyre life, and a slow puncture shows up before it becomes a blowout. Sensors add a little weight to the valve - fine on a road car.