Name: PowerSlider
Rating: 4.7 (53 reviews)
Author: bjarnib

Displays current or average power in a against a sliding scale and colored background defined by your power zones. The current power zone is displayed next to the power value.

The data field supports the following settings through Garmin Express or the Garmin Mobile App:

* Text Color (Black/White)
* Size of the display scale (40/60/80/100 watts).   I.e. how many watts does the field width represent, to stretch the scale select a lower number.  
* Power Averaging Period (1 sec / 3 sec / 10 sec / 30 sec)
* Suppress the display of the zone number.
* Display power as FTP percentage instead of watts.
* The Functional Threshold Power (FTP) for the user.
* Percentages of FTP for the user's power zones (z1-z7)

This field can be combined with other data fields on multi-field training pages.    For use on a watch (round display), note that this works best if placed in the upper half or as a middle field on the watch.

Also note that you need to set your FTP and zones in the settings for the app as the app can not access the FTP/zone data that you may have set on your device. This is currently a limitation in the Garmin Connect IQ framework.

An ANT+ power meter must be paired with the device to provide the power data.

If you like this data field please consider leaving a review and / or a donation via https://goo.gl/CuOOWZ

If you are having problems configuring or displaying the data field on your device, please get in touch via the email link before leaving a negative review.

Ver. 1.2 Adds capability to configure text color to either Black or White and selecting the power averaging period (3/10/30 sec).
Ver 1.3 Adds the possibility to select 1 sec (instant) power for display.  Lines depicting the scale of 50w increments are wider for added visibility.
Ver 1.4 Fixes problem when updating settings from Android phones.  Color set modified to match the colors used by Zwift workouts.
Ver 1.41 Bug fixes.
Ver 1.5 Allows configuration of the display scale.
Ver 1.6 - Support added for Fenix 5 (note due to different fonts on the Fenix 5 a layout using 1 or 2 data fields is recommended)
Ver 1.7 support added for Edge 1030 and Forerunner 935
Ver 1.8 support added for Edge 530 and 830
Ver 1.81 Support for additional devices
Ver 1.82 Support for additional devices
Ver 1.83 Support for Edge 1040
Ver 1.9 Text alignment issues in small fields
Ver 1.91 Support for Edge 540/840
Ver 2.0 more readable layout for zone  number display / new devices added / updated SDK
Ver 2.1 Allows suppression of zone number display through settings - larger fonts on supported devices.
Ver 2.2 Added option to display power as percentage of FTP instead of watts
Ver 2.3 Resize (enlarge) font if display of zone number is suppressed. Support for Edge 1050. 
Ver 2.4 Support for Edge 550/850/Fenix 8 