What does 低亮度按钮 look like on JoyPixels?

On JoyPixels it is the design shipped in 11.0, shown above at full size. Older revisions are listed beneath it.

When did JoyPixels add 低亮度按钮?

JoyPixels first drew 低亮度按钮 in 1.0, released 2014年9月4日.

JoyPixels, Inc. has shipped 20 versions of 低亮度按钮. Each is dated, so you can see when the design changed.

JoyPixels 4.5

This is the design JoyPixels introduced in 4.0, shipped again unchanged. It was not redrawn for this release.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does 低亮度按钮 look like on JoyPixels?: On JoyPixels it is the design shipped in 11.0, shown above at full size. Older revisions are listed beneath it.
When did JoyPixels add 低亮度按钮?: JoyPixels first drew 低亮度按钮 in 1.0, released 2014年9月4日.
How many times has JoyPixels redrawn 低亮度按钮?: JoyPixels, Inc. has shipped 20 versions of 低亮度按钮. Each is dated, so you can see when the design changed.