The Acaia Lunar Ghost Edition was an all-white Lunar with only 100 units produced. Each unit has "Ghost Edition" laser-etched on the side, along with the batch number in the production "x/100." The edition was released for pre-order on November 2015.
The Ghost Edition has full firmware support, just like the Black and Silver Lunars. There are no more ghost editions for sale because it was a limited run.
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See our blog post in the link here.