Catalog Spec
| Developer | BANDAI |
| Release date in Japan | 4th March 1999 |
| Media | ROM cartridge |
| CPU | V30MZ core 16bit (3.72 MHz) built in ASWAN (one chip LSI) |
| LSI | ASWAN, a LSI chip for WONDER SWAN |
| RAM | 16 KB |
| Graphic | FSTN reflective LCD 224*144 dots (dot matrix) 2.49 inch dot matrix Monochrome 8 gradations |
| Sound | Digital tone generator 4ch stereo (waveform memory tone generator, 1ch is available for PCM tone generator) |
| List price in Japan | 4,800 yen |
Catalog Spec
| Developer | BANDAI |
| Release date in Japan | 9th December 2000 |
| Media | ROM cartridge |
| CPU | V30MZ core 16bit (3.72 MHz) built in ASWAN (one chip LSI) |
| LSI | One chip LSI “SPHINX” for WONDER SWAN Main memory 64KB |
| RAM | 16 KB |
| Graphic | FSTN refrective LCD 224*144 dots (dot matrix) 2.49 inch dot matrix Monochrome 8 gradations |
| Sound | Digital tone generator 4ch stereo (waveform memory tone generator, 1ch is available for PCM tone generator) |
| Other feature | DMA (Direct Memory Access) installed Hyper voice installed |
| List price in Japan | 6,800 yen |
WONDER SWAN is a handheld videogame console released by BANDAI in March 1999. This console is famous for the launch-up project participation of Gunpei Yokoi, an engineer who developed GAME&WATCH series, GAMEBOY and VIRTUAL BOY. In 1997, the year before Wonder Swan was released, NINTENDO already released GAMEBOY COLOR. Also, SNK released NEOGEO POCKET in the same timing. Therefore, BANDAI decide the product with monochrome display to priotize the battery life and the low cost. However, the color display in the low cost already became the standard of the handheld gaming device at that time, finally BANDAI released WONDER SWAN COLOR in 2000. BANDAI focused on the young generation as the users and came up with the strategic policy to create the fashionable and stylish images. As a result, the gaming console could succeed to gain its share in the handheld gaming device market. Later GAMEBOY ADVANCE almost dominated the market, WONDER SWAN could not but withdraw from the market. In 2003, BANDAI officially announce that the manufacturing would be switched to the order produced “WONDER SWAN CRYSTAL”, and the console was discontinued literally.
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