Cyrillic Capital Letter Zhwe
HTML Entity Browser Test:

U+A684 is the Unicode hex value of the character Cyrillic Capital Letter Zhwe, which is categorized as "uppercase letter" in the Unicode 6.0 character table.

Unicode Character Information
Unicode Hex U+A684
Character Name CYRILLIC CAPITAL LETTER ZHWE
General Category Uppercase Letter [Code: Lu]
Canonical Combining Class 0
Bidirectional Category L
Mirrored N
Lowercase Version U+A685
Unicode Character Encodings
Cyrillic Capital Letter Zhwe HTML Entity Ꚅ (decimal entity), Ꚅ (hex entity)
Windows Key Code Alt 42628 or Alt +A6841
Programming Source Code Encodings Python hex: u"\uA684", Hex for C++ and Java: "\uA684"
UTF-8 Hexadecimal Encoding 0xEA9A84
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 42628) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +A684) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Cyrillic Capital Letter Zhwe character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.