SRAM, Apex D1 Power Meter Assembly, Power Meter Crankset, Speed: 12, Spindle: 28.99mm, Dub, 172.5mm, Black, Road Disc

DUB-PWR spindle-based unit measures left side power to calculate total watts
Proven Quarq reliability and accuracy
Long battery life (400+ hours) to power a season of rides
Waterproof (IPX7 waterproof to 1 meter for 30 minutes)
DUB bottom bracket (Sold separately) adds durability and simplicity
1.4 pounds