8️⃣ Keycap Digit Eight

The Keycap Digit Eight emoji is a sequence of the 8 Digit Eight and ⃣ Combining Enclosing Keycap emojis. These display as a single emoji on supported platforms.

Keycap Digit Eight was approved as part of Unicode 3.0 in 1999 and added to Emoji 3.0 in 2016.