What does 逆再生ボタン look like on SoftBank?

On SoftBank it is the design shipped in 2014, shown above at full size. Older revisions are listed beneath it.

When did SoftBank add 逆再生ボタン?

SoftBank first drew 逆再生ボタン in 1999, released 1999年1月1日.

SoftBank Corp. has shipped 8 versions of 逆再生ボタン. Each is dated, so you can see when the design changed.

SoftBank 2000

SoftBank shipped a new design for 逆再生ボタン in 2000, released 2000年1月1日. The previous design is shown beside it.

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

What does 逆再生ボタン look like on SoftBank?: On SoftBank it is the design shipped in 2014, shown above at full size. Older revisions are listed beneath it.
When did SoftBank add 逆再生ボタン?: SoftBank first drew 逆再生ボタン in 1999, released 1999年1月1日.
How many times has SoftBank redrawn 逆再生ボタン?: SoftBank Corp. has shipped 8 versions of 逆再生ボタン. Each is dated, so you can see when the design changed.