The StoreJet 25H3 portable hard drive combines the superior performance of USB 3.1 Gen 1, vast storage space, eye-catching enclosure, and a three-stage shock protection system that meets U.S. military drop-test standards. What else can you ask for?SpecificationsSize 1TB/2TB: 131.8mmﾗ80.8mmﾗ19.0mm (5.27" x 3.23" x 0.76")3TB/4TB: 131.8mmﾗ80.8mmﾗ24.5mm (5.27" x 3.23" x 0.98")Weight 1TB/2TB: 197g (6.95 oz)3TB/4TB: 298g (10.51 oz)Operating Voltage USB DC 5VOperating Temperature 5ｰC (41ｰF) ~ 55ｰC (131ｰF)Storage Media 2.5" SATA HDDCertificates CE, FCC, BSMIConnection Interface USB 3.1 Gen 1 (backward compatible with USB 2.0)Power Saving Mode 10 minsOne-Touch Backup YesFor Any Query Please Contact Bizgram Asia Pte Ltd +65-87776955