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Inventories (Details) - BFLY Operations Inc - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Raw materials | $ 7,688 | $ 843
Work-in-progress | 865 | 4,788
Finished goods | 17,252 | 3,810
Total inventories | 25,805 | 9,441
Net realizable value inventory adjustments and excess and obsolete inventory charges | $ 7,100 | $ 2,700

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