The Pioneer SBT-PM91 Bluetooth/ANT+ dual power meter provides power and cadence data, like most bicycle power meters. But also offers the flexibility to use as a left or right side only solution. It also has some extra functionality around left/right efficiency and balance not available from other meters. Doesn’t quite meet the claimed weight of 61g. 4g for magnets is excusable, I suppose. Maybe the 8g (69-61) difference is the CR2032 batteries?…
