Brochure for the SHARP GF-490(R) The Searcher W dual-cassette boombox, August 1982. The headline feature is “倍速編集” high-speed dubbing: recording at double speed cuts cassette-copying time in half, and that’s front-and-center on the cover. Three dual-deck operating modes are laid out as ACT 1/2/3: one-button direct copy (ダイレクト), APSS-WF auto-stop editing, multi-track overdubbing, and dual playback. Both colorways are shown - silver and red GF-490(R), both at ¥63,000. The back page covers the external connection diagram, accessories list with prices, and the full spec table.