Force turn on your backlight for 2 seconds.
Open backlight manually just like normal electric watch. It's especially useful when auto backlight off.
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How to use?
1. Go to Settings > Quick Launch page
Set this app as down button (or up button)
long press
2. Long-press the button as you set in the watchface page, backlight will turn on for 2 second. 
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Demo video:
https://youtu.be/VV7u0Loy_ko
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Foxmosa is mascot of Mozilla Taiwan Community.
Mozilla produces many products such as the Firefox, Thunderbird, Firefox OS.
Picture designed by ECBp + Tatit + Indigo + Irvin (cc:by-nc-sa)
MozTW, Mozilla Taiwan Community

Firefox style watchface.
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Mozilla produces many products such as the Firefox, Thunderbird, Firefox OS.
(Photo sketched by Jon Hicks Nov.2007 concept logo)
http://goo.gl/uJxgDU

Firefox style watchface.
---
Mozilla produces many products such as the Firefox, Thunderbird, Firefox OS.
(Photo sketched by Jon Hicks Nov.2007 concept logo)
http://goo.gl/uJxgDU