specially equipped; customized
Often used for vehicles, editions, or equipment that have been modified or fitted with special features beyond the standard model.
The specially equipped vehicle attracted attention at the exhibition.
この本には特装版がある。
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.