QUARQ TyreWiz Sensor For Presta Valve 2 Units

The Quarq DZero Powermeter Spider is compatible with Specialized S-Works racing cranks from model year 2013. A specialized Lock Ring Tool is required for installation. Features: - 10K Active Temperature Compensation - Wireless data transfer via Bluetooth Low Energy or ANT + - Chain shifts require no recalibration has no influence on the measuring accuracy - Cadence measurement via acceleration sensors (no additional magnet required!) - Waterproof construction according to IPX7 standard - LED-Power indicator always informs about battery status - 200 hours operating time (toolless battery change according to CR2032 standard) - Power Balance - +/- 1.5% measuring accuracy Technical specifications: - Material spider: aluminum - Bolt circle diameter : 110 mm compact 5-arm - Compatibility Crank: Specialized S-Works Road cranks from 2013 - Technology: Quarq Power Meter - Chainrings: without