Blu-Ray players
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Blu-ray Disc (official abbreviation BD) is an optical disc storage medium designed to supercede the DVD format. The plastic disc is 120 mm in diameter and 1.2 mm thick, the same size as DVSs and CDS Blu-ray Discs contain 25 GB per layer, with dual layer discs (50 GB) being the norm for feature-length video discs.