Function/FeaturePowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Copyright DC Rainmaker - Updated May 14th, 2021 @ 3:10 pm
Price$599 (no wheel)$1499$2295 (pedals only)$729 (no cranks)/$749 (cranks)$1299 (R with cranks, no chainrings)/$1399 (RS)$1099 (with cranks, no chainrings)$529 (left crank arm only)
Available todayYesYesYesYesYesYesYes
Measurement TypeDirect ForceDirect ForceDirect ForceDirect ForceDirect ForceDirect ForceDirect Force
Attachment areaRear Wheel HubPedalsPedalsCrank SpiderCrank SpiderCrank SpiderLeft Crank
Attachment limitationsN/ALook Keo Compatible pedals onlyLook Keo Pedals OnlySpecific supported cranksSpecific supported cranksSpecific supported cranksSpecific supported cranks
Weight (additional/net)315g/325g (full hub)175g per pedal (inclusive)24gFrom 189g + crankElsa R: 576g/Elsa RS: 616g (including cranks)From 659g (including cranks)20g
Wireless Connectivity TypeANT+/Bluetooth Smart (depends on cap)ANT+Polar W.I.N.D.ANT+ANT+ANT+ANT+ & Bluetooth Smart
Unit auto-turns on when on bikeYesYesNoYesYesYesYes
BatteryPowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Battery Life300 hours175 hours465 hours300-400 hours300 hours300 hours200 hours
User or Factory battery replacementUserUserUserUserUserUserUser
Battery typeCR2032CR20322 x CR2354CR2450CR2032CR2032CR2032
Low Battery WarningYesYes, 20 hoursYesYesYesYesYes
FeaturesPowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Measures/Transmits CadenceYes (Estimated)YesYesYesYesYesYes
Ability to update firmwareYesYesNoFactory OnlyQalvin App & USB ANT+ StickQalvin App & USB ANT+ StickYes
Transmits Left/Right Power Balance (Estimated)NoN/AN/AYesYesYesNo
Transmits Left/Right Power Balance (Measured)NoYesYesNoNoNoNo
Transmits Pedal SmoothnessNoPlannedNoNoNoNoNo
AccuracyPowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Measures all power outputYesYesYesYesYesYesNo
Claimed Accuracy Level+/- 1.5%+/- 1.5%+/- 2%+/- 2%+/- 1.5%+/- 1.5%+/- 2% (of left leg)
Includes temperature compensationYesYesYesYesDone at factoryDone at factoryYes
Supports auto-zero functionYesYesNoYesYesYesNo
Supports manual calibrationYesYesNoYesYesYesYes
Supports hanging weights (static test)YesYesNoYesYesYesNo
SoftwarePowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Phone App to Configure/TestNoDesktop App (PC/Mac)NoNoYesYesYes
PurchasePowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
AmazonLinkLinkLinkN/ALinkLinkN/A
DCRainmakerPowerTap G3 HubGarmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
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