2-speed, DUB, without bottom bracket, unicorn grey 12-speed compatible, carbon crank, direct mount aluminium chainrings, 45 mm chainline, Bluetooth and ANT+ wireless technology, LED indicator for operational readiness, reset and low battery, accuracy: +/- 1.5%, dual-sided measurement, tool-free battery replacement (CR2032) Number of chainrings 2 Type Item main colour grey Large chainring 46 T. Small chainring 33 T. Crank length 175.00 mm Secondary colour multicolour System compatibility 12-speed Bottom bracket DUB Variation set