specially equipped; customized
Often used for vehicles, editions, or equipment that have been modified or fitted with special features beyond the standard model.
特装車が展示会で注目を集めた。
The specially equipped vehicle attracted attention at the exhibition.
この本には特装版
There is a special edition of this book.
specially bound edition; special edition (book) · edition with bonus items; special edition (manga, etc.)
Compound of 特 (special) and 装 (equip, dress). The exact historical derivation is uncertain, but the word is a modern coinage for specially outfitted items.