1-speed, DUB, without bottom bracket, 12-/13-speed compatible, hollow carbon crank arms, X-Sync aluminum chainring for screw mounting, Bluetooth and ANT+ wireless technology, LED indicator for operational readiness, reset and low battery level, Accuracy: +/- 1.5%, bilateral measurement, waterproof according to IPX7 standard, tool-free battery change (CR2032), chainline 47.5 mm Number of chainrings 1 Type Item Main color black Large chainring 42 T. Chainline 47.5 mm Crank length 172.50 mm Secondary color grey System compatibility 12-speed, 13-speed Bottom bracket DUB Variation Set Tracking training progress on the gravel bike has become even more accurate with the SRAM RED AXS Crankset with powermeter. With the new spider-based power meter and removable Thread Mount chainrings, the RED XPLR power meter is lightweight, reliable in all weather conditions, and accurate to +/-1.5%. With two-sided power measurement, even the highest gravel training goals are within reach. Completely new design with removable and replaceable threaded chainrings Power measurements are accurate to within +/-1.5% and are not affected by weather conditions User-replaceable CR2032 battery with a battery life of 200 hours Measures the power balance of the right and left leg Ultralight hollow carbon crank arms are 29 grams lighter than the previous generation DUB bottom bracket adds durability and simplicity Waterproof (IPX7) SRAM Article number: 735704 EAN code: 710845904875 Supplier number: 00.6118.689.010 Retail packaging: Yes