Varmilo Beijing Opera keyboard, Full size, ANSI layout, with ECV2 Rose switches (proprietary electrostatic mechanical switches). Sold as seen, comes with the photographed accessories - keycap puller and spare key caps - in the original box. Also comes with a matching oversized mouse mat. See the detailed photos which show everything in amazing condition. I put 'Ducky style' in the title because more people are familiar with the brand Ducky and this brand, Varmilo, has some similar concepts. Varmilo seems to be lesser known in the West but is very high quality.
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