Western Digital My Passport External HDD 2000 GB Blue Product colour___Red 4 GHz Design Product colour 4 GHz Design Product colour Black Form factor Ambidextrous Unifying receiver Yes Receiver type Nano receiver Receiver Unifying receiver Yes Receiver type Nano receiver Technical details Service life of battery 6 month(s) Weight 90 g Product colour Black Form factor Ambidextrous Plug and Play Yes Rechargeable No Programmable mouse buttons No Number of scroll wheels 1 Keypad integrated No Harmonized System (HS) code 84716070 Ergonomics Plug and Play Yes Wireless range 5 m Rechargeable No Power Service life of battery 6 month(s) Power source Batteries Battery technology Alkaline Number of batteries supported 1 Battery type AA Rechargeable No Operational conditions Operating temperature (T T) 0 40 �C Storage temperature (T T) 40 60 �C Operating relative humidity (H H) 5 80% Storage relative humidity (H H) 5 65% Software Windows operating systems supported Windows 7 Home Premium Galaxy Watch can manage calls Connector: 3 Storage Capacity: 2TB