It’s the best of both worlds. A light and stiff direct mount chainring with accurate Quarq power measurement elegantly hidden inside the DUB spindle lets you stealthily gather the data you need to progress. 
 DUB-PWR spindle-based 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
 DUB bottom bracket adds durability and simplicity
 Waterproof (IPX7 waterproof to 1 meter for 30 mins)
 Lightweight (less than 40g heavier than standard crankset)
 SRAM Model ID: FC-FRC-1P-D2
| Speed | 
12 | 
| Pedals Thread | 
9/16 | 
| Crank Spindle Diameter | 
28.99mm | 
| Interface | 
DUB | 
| Primary Color | 
Black | 
| BCD | 
Direct Mount | 
| Drivetrain Spacing | 
Road Disc | 
| Teeth | 
40 | 
| Chainline | 
45mm | 
| Connectivity | 
ANT+ BT LE | 
| BB Inclusion | 
No | 
| Crank Arm Length | 
167.5mm | 
| Crankset Material | 
Carbon |