Spindle-based power meter unit measures left side power to calculate total watts Long battery life (400+ hours) to power a season of rides (User replaceable AAA lithium battery) IPX7 waterproof to 1 meter for 30 minutes X-Sync wide-tooth, narrow-tooth aluminum chainring technology provides maximum chain control Carbon fiber crankarms are incredibly strong and lightweight Measuring your power and keeping tabs on your data just got more precise. The Force XPLR AXS power meter is elegantly hidden inside the DUB spindle, which lets you stealthily gather the data you need to progress. This power meter has a longer battery life, is lighter weight and dependable in tough weather conditions to ensure accuracy and reliability. The Force XPLR 13-Speed power meter Wide crankset features refined, elegant carbon crankarms with an updated light and stiff direct mount 1x chainring. This crank can do it all and looks great doing it. Spindle-based power meter unit measures left side power to calculate total watts. Long battery life (400+ hours) to power a season of rides (User replaceable AAA lithium battery). IPX7 waterproof to 1 meter for 30 minutes. X-Sync wide-tooth, narrow-tooth aluminum chainring technology provides maximum chain control. Carbon fiber crankarms are incredibly strong and lightweight. DUB bottom bracket adds durability and simplicity (Bottom bracket sold separately). 150mm Q-factor / 47.5mm chainline. Item Specifications: Rings: 42, Number of Chainrings: Chain Retaining Single, Drivetrain Speeds: 12, Drivetrain Speeds: 13, Chainring BCD: Direct Mount SRAM 8-Bolt, Chainline/Hub Compatibility: 135/142 Road Disc Hubs <415 mm Chainstay, Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415 mm Chainstay, Color: Carbon, Crank Length (mm): 160, Crank Intended Use: Road, Crank Intended Use: Gravel, BB Included: No, Pedal Spindle: 9/16", Spindle Interface Type: SRAM DUB, Defined Color: Carbon,