What does Repeat Single Button look like on Messenger?

On Messenger it is the design shipped in 1.0, shown above at full size. Older revisions are listed beneath it.

When did Messenger add Repeat Single Button?

Messenger first drew Repeat Single Button in 1.0, released June 1, 2016.

Meta Platforms, Inc. has shipped 1 version of Repeat Single Button. Each is dated, so you can see when the design changed.

Messenger 1.0

Messenger shipped a new design for Repeat Single Button in 1.0, released June 1, 2016. The previous design is shown beside it.

The first Messenger release we hold for this emoji.

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

What does Repeat Single Button look like on Messenger?: On Messenger it is the design shipped in 1.0, shown above at full size. Older revisions are listed beneath it.
When did Messenger add Repeat Single Button?: Messenger first drew Repeat Single Button in 1.0, released June 1, 2016.
How many times has Messenger redrawn Repeat Single Button?: Meta Platforms, Inc. has shipped 1 version of Repeat Single Button. Each is dated, so you can see when the design changed.