Quarq: TyreWiz is the first-of-its-kind tire pressure sensor for riders of mountain bikes and road bikes. Lightweight, durable, and powered by a long-lasting user-replaceable coin cell battery, TyreWiz monitors air pressure in real-time and relays the data to a cycling computer or a smartphone. The TyreWiz app uses that data to deliver personalized recommendations and pressure alerts. For the first time, riders have access to highly accurate real-time tire pressure data to make decisions that can affect rolling resistance, traction, tire wear, and rider comfort.Features & Benefits• Designed for road and mountain bike riders.• Personalized tire recommendations in the smartphone app for iOS and Android.• NFC pairing for fast and easy connection by BLE to a phone• Data reported with +/- 2% accuracy at .1 PSI resolution.• Broadly compatible with tires that use a Presta-style valve core.• Inexpensive, user-replaceable CR1632 battery lasts for 300 hours.• IP67 dustproof/waterproof rating.• Box includes valve core removal tool for installation. Essential Details• Works with any tire that uses a removable Presta valve core: both tube and tubeless, and tires with anti-flat sealant.• For all bike riders, regardless of their experience or bike’s intended use.• 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.• Retail package includes two sensors, batteries, and a valve core removal tool.• Use it for every ride to find the perfect combination of tire, wheel, and pressure in changing terrain and conditions.• Include LED lights to indicate when pressure is outside the target range.