Accelerate your progress with lightweight, accurate and reliable power measurement for Force AXS. FEATURES: Proven Quarq reliability and accuracy Long battery life to power a season of rides Waterproof (IPX7) waterproof to 1 meter for 30 minutes) Spindle-based unit measures left side power to calculate total watts SPECS: Speeds: 12/13 Crank Arm Length: 160mm, 165mm, 170mm, 172.5mm, 175mm BB Compatibility: All SRAM Road WIDE DUB BBs Chainring Size: n/a Bolt Circle Diameter (BCD): Direct Mount (DM) Chainline: 47.5mm BB Spindle Interface: DUB Chainring Material: n/a Guard: n/a Crank Arm Material: Carbon Color (Crank Arm): Black Power Meter Type: Spindle Hub Spacing Compatibility: n/a Chainring Offset: n/a