The SR-VM series cards come in three sizes: 32GB(SR-32VMA & SR-32VM), 64GB(SR-64VMA & SR-64VM) and 128GB(SR-G1VMA & SR-G1VM) and are designed for use at regular operational temperatures (-25ºC~85ºC).
The SR-WM series cards come in three sizes: 32GB(SR-32WMA & SR-32WM), 64GB(SR-64WMA & SR-64WM) and 128GB(SR-G1WMA & SR-G1WM) and are designed for use at wider operational temperatures (-45ºC~85ºC).
* Download from: http://www.sony.net/Products/memorycard/en_us/ipcamsd/dl.html
Wide Operation Temperature Model
SR-32WMA & SR-32WM: 32GB
SR-64WMA & SR-64WM: 64GB
SR-G1WMA & SR-G1WM: 128GB
SR-32WMA & SR-32WM: 68TB
SR-64WMA & SR-64WM: 137TB
SR-G1WMA & SR-G1WM: 274TB
SR-32VM & SR-64VM & SR-G1VM & SR-32WM & SR-64WM & SR-G1WM: –
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