3.5 Gigamo Magneto-Optical Disks. Designed to store data safely an efficiently. Ideal for multimedia back-up, data archiving and digital video editing.- High reliability- Fast transfer rates up to 5.92 MB per second- Over 50 years archival life- Full backward compatibilityFeatureProduct FeaturesTechnical detailsFormatted recording capacity228.5MB Unformatted recording capacity230MB Physical tracks11500.0 Mac compatibilityN Logical tracks17940.0 Configuration of trackSpiral Track pitch1.39¶æm Bytes per sector512 Optical disk diameter86mm Environmental conditionsArchival storage life50years Operating temperature range T-T41-131¶øF Operating relative humidity range3-85% Operating temperature range T-T5 - 55¶øC Storage temperature range T-T-10-55¶øC Storage relative humidity range3-90% Weight & dimensionsHeight94mm Width90mm Depth6mm Weight10g