Sony Super Betamax Model SL-HF840D Home Forums Galleries Beta Format Galleries Sony Betamax Gallery Vintage Video Galleries E-mail   Vintage Sony Super Betamax VTR Model SL-HF840D   Sony Betamax SL-HF840D Information     Sony Super Betamax SL-HF840D. From the year 1988. Sold for $550. features, 14-day, 4-event programming, different digital effects, such as picture-in-picture, strobe, stop motion, tape return, function indicator display, function display with displays clock/counter, channels, and much more.   Pictures