Fullwidth Latin Capital Letter W
HTML Entity Browser Test:

U+FF37 is the Unicode hex value of the character Fullwidth Latin Capital Letter W, which is categorized as "uppercase letter" in the Unicode 6.0 character table.

In addition, U+FF37 is a composite character comprising of one or more other Unicode characters modified or combined.

Unicode Character Information
Unicode Hex U+FF37
General Category Uppercase Letter [Code: Lu]
Canonical Combining Class 0
Bidirectional Category L
Decomposition Mapping <wide> 0057
Mirrored N
Lowercase Version U+FF57
Unicode Character Encodings
Fullwidth Latin Capital Letter W HTML Entity &#65335; (decimal entity), &#xFF37; (hex entity)
Windows Key Code Alt 65335 or Alt +FF371
Programming Source Code Encodings Python hex: u"\uFF37", Hex for C++ and Java: "\uFF37"
UTF-8 Hexadecimal Encoding 0xEFBCB7
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 65335) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +FF37) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Fullwidth Latin Capital Letter W character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.