* TyreWiz monitors air pressure in real-time and relays the data to a cycling computer or a smartphone* Works with any tire that uses a removable Presta valve core: both tube and tubeless, and tires with anti-flat sealant* Data can be read on a cycling computer or smartphone with the app for iOS and Android* Smartphone app displays personalized recommendations, current tire pressure, and low/high pressure alerts* LED lights to indicate when pressure is outside the target range* NFC pairing for fast and easy connection by BLE to a phone* Data reported with +/- 2% accuracy at .1 PSI resolution* Inexpensive, user-replaceable CR1632 battery lasts for 300 hours* IP67 dustproof/waterproof rating* Includes two sensors, batteries, and a valve core removal tool