The correct tire pressure in the tire not only guarantees safety and riding comfort but also affects the longevity of the tires and serves as the best puncture protection. Simply twist the valve adapter onto the valve, attach the sensor, and you're good to go. Once mounted, the dust- and waterproof sensor measures the tire pressure. The precise real-time data is transmitted by the air pressure sensor via Bluetooth or ANT+ to compatible bicycle computers or smartphones with the SKS MYBIKE app. In the app, current air pressure, temperature, and battery level of the sensor are displayed. In case of pressure deviations, the discreet air spy alerts with an alarm. It can also be used as a mobile digital manometer. This way, the tire pressure can be digitally measured every time you inflate. Included in the scope of delivery are: 1 sensor for the front wheel and 1 for the rear wheel, 4 theft protection brackets of different sizes, 2 valve adapters, and CR 2032 batteries.