Code point
U+3399
Glyph appearance depends on your fonts.
U+3399
So<square> 0066 006DU+3399 SQUARE FM is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+3399
13209
㎙
㎙
E3 8E 99
3399
00003399
%E3%8E%99
\u3399
\u3399
\u3399
\3399