Accelerate your progress with lightweight, accurate and reliable power measurement for Force AXSThis quick, easy upgrade to our compact spindle power meter fits your needs and takes your training to the next levelSpindle-based unit measures left side power to calculate total wattsIPX7 waterproof to 1 meter for 30 minutes for all weather conditionsLong battery life to power a season of ridesProven Quarq reliability and accuracy172.5mmDUB WideBlackUPC/EAN/GTIN: 710845915390