Stages Power Carbon GXP MTB Left Crank Arm Power Meter

STAGES CARBON GXP MTB LEFT 170MM
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) 
Power range (Watts): 0 to 2500
Cadence range (rpm): 10-220
Water resistance rating: IPX7