Two triangles pointing to the right. Most commonly used as a symbol for fast forwarding media such as video tapes, CDs, or digital audio and video.
Fast-Forward Button was approved as part of Unicode 6.0 in 2010 under the name “Black Right-Pointing Double Triangle” and added to Emoji 1.0 in 2015.
U+23E9
⏩ Black right-pointing double triangle