Stages Dura Ace R9200 Left

The new single-sided Stages Power L meter is built on to a non-drive-side Shimano Dura-Ace R9200 crank arm and is compatible with all Shimano Hollowtech II road drivetrains.
 
Accuracy: ± 1.5%
Power meter housing: low profile design, with robust door interface
Weight: Only adds 15g to base crank arm
Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter
Power range (Watts): 0 to 2500
Cadence range (rpm): 10-220
Water resistance rating: IPX7