- Feature
|
- PowerTap SL 2.4
-
|
- PowerTap SL
-
|
- PowerTap Pro
-
|
SYSTEM
FEATURES |
Accuracy
|
+/- 1.5%
|
+/- 1.5%
|
+/- 1.5%
|
Wireless?
|
Yes
|
No
|
No
|
System Weight
|
480 grams
|
480 grams
|
640 grams
|
Warranty
|
1 Year
|
1 Year
|
1 Year
|
HUB FEATURES
|
Hub Weight
|
416 grams
|
416 grams
|
576 grams
|
Bearings
|
4 sealed cartridge
|
4 sealed cartridge
|
4 sealed cartridge
|
Freehub
|
Alloy Shimano/Campagnolo
|
Alloy Shimano/Campagnolo
|
Steel, Shimano Only*
|
Axle
|
Alloy
|
Alloy
|
Steel
|
Axle Spacing
|
130,135 mm
|
130,135 mm
|
130,135 mm
|
Hub Shell |
Carbon/Aluminum
|
Carbon/Aluminum
|
Carbon/Aluminum
|
Drillings
|
20,24,28,32
|
20,24,28,32
|
20,24,28,32
|
Hub Flanges
|
Symmetrical
|
Symmetrical
|
Symmetrical
|
CPU FEATURES |
Current Power
|
Yes
|
Yes
|
Yes
|
Max. Power
|
Yes
|
Yes
|
Yes
|
Average Power |
Yes
|
Yes
|
Yes
|
Current Heart Rate
|
Yes
|
Yes
|
Yes
|
Average Heart Rate
|
Yes
|
Yes
|
Yes
|
Coded Heart Rate
|
Yes
|
Yes
|
Yes
|
Current Cadence
|
Yes
|
Yes
|
Yes
|
Average Cadence
|
Yes
|
Yes
|
Yes
|
Cadence Measured
by sensor
|
Optional**
|
Yes
|
Yes
|
Cadence Measured by Hub
|
Yes
|
Yes
|
Yes
|
Current Speed
|
Yes
|
Yes
|
Yes
|
Max. Speed |
Yes
|
Yes
|
Yes
|
Average Speed
|
Yes
|
Yes
|
Yes
|
Energy Expenditure (kj)
|
Yes
|
Yes
|
Yes
|
Distance/Speed in Miles or KM
|
Yes
|
Yes
|
Yes
|
Ride Time
|
Yes
|
Yes
|
Yes
|
Programmable Odometer
|
Yes
|
Yes
|
Yes
|
Time of Day
|
Yes
|
Yes
|
Yes
|
Customizable Display
|
Yes
|
Yes
|
Yes
|
1-second recording
|
Yes
|
Yes
|
Yes
|
Multiple recording rate options
allowing 7 or 15 hours of storage
|
Yes
|
Yes
|
Yes
|
Unlimited Ride Intervals
|
Yes
|
Yes
|
Yes
|
Option to smooth display for better
pacing
|
Yes
|
Yes
|
Yes
|
Easy installation
|
Easiest
|
Easy
|
Easy
|
Wired Cycle Computer Function
|
No
|
Yes***
|
Yes***
|
Wireless Cycle Computer Function
|
Yes****
|
Yes****
|
Yes****
|
Heart Rate Monitor Only mode
|
Yes
|
Yes
|
Yes
|
*Campagnolo conversion cassette available for
adaption of Shimano to Campagnolo componentry.
**Cadence sensor available for purchase.
***Magnet must be attached to spoke of rear wheel.
****Purchase of additional fork sensor is required. |
|