[MicroBT Launches Latest WhatsMiner Series Miners with Three Efficiency Levels] According to Bitcoin News, Bitcoin mining hardware manufacturer MicroBT has unveiled its latest WhatsMiner series products in Abu Dhabi. The series is divided into three efficiency levels: 12.5 J/TH, 13.5 J/TH, and 14.5 J/TH, with each level including multiple air-cooled and water-cooled models.