Bitdeer launches the SEALMINER A4 series Bitcoin miners, achieving an energy efficiency breakthrough of 9.45 J/TH Bitdeer (NASDAQ: BTDR) @BitdeerOfficial officially unveiled its next-generation self-developed mining machines today—the SEALMINER A4 series. With the debut of the A4 series, Bitdeer has successfully completed its previously announced mining machine technology roadmap. The series includes three models: the A4 Pro air-cooled version, the A4 Pro liquid-cooled version, and the flagship A4 Ultra liquid-cooled version. Among them, the A4 Ultra liquid-cooled version achieves a groundbreaking energy efficiency as low as 9.45 J/TH, while the A4 Pro air-cooled and liquid-cooled versions both deliver an energy efficiency of 10.9 J/TH.