50 teeth, 1x, DUB, without bottom bracket, 12-speed compatible, hollow carbon crank arms, X-Sync Aero direct mount aluminum chainring, Bluetooth and ANT+ wireless technology, LED indicator for power on, reset and low battery, accuracy: +/- 1.5%, dual-sided measurement, tool-free battery replacement (CR2032), 45 mm chainline Number of chainrings 1 Type main product color black Large chainring 50 T. Chainline 45.0 mm Crank length 165.00 mm Secondary color grey System compatibility 12-speed Bottom bracket DUB Variation groupset