Nippon J-2660
The Nippon J2660 is very rare. It is a large, dual-cassette boombox with unique "lightning bolts" on the speakers. It has dual antennas, shoulder strap holders, and a "2-channel, 5-band graphic equalizer" (2 x 5 = 10 sliders).
It measures 28" wide, 14.5" tall, and 7" deep. The "200 watt" claim on the rear label is total BS. The vast majority of 1-piece boomboxes only produced 2 to 15 watts per channel RMS.