Code point
U+27F8
Glyph appearance depends on your fonts.
U+27F8
SmU+27F8 LONG LEFTWARDS DOUBLE ARROW is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Supplemental Arrows-A block.
Choose the representation you need, then copy its value.
U+27F8
10232
⟸
⟸
⟸
E2 9F B8
27F8
000027F8
%E2%9F%B8
\u27F8
\u27F8
\u27F8
\27F8