It looks the same as the Latin letter X (X x X x), in both uppercase and lowercase, both roman and italic forms, and was derived from the Greek letter Chi, which also bears a resemblance to both the Latin X and Kha.

[1] It commonly represents the voiceless velar fricative /x/, similar to how some Scottish speakers pronounce the ⟨ch⟩ in “loch”, but has different pronunciations in different languages.

The name of Kha in the Early Cyrillic alphabet was хѣръ (xěrŭ).

Kha is also an alternative transliteration of the letter خ Ḫāʼ in the Arabic alphabet.

Kha with inverted breve (Х̑ х̑) represents the voiceless uvular fricative (/χ/).