Open box -Drives are new, box is a little beat up and dirty though.
May need to be formatted with disk utility to work with Mac.
Specs:

Operating temperatures: 32º F to 140º F (0º C to 60º C)

Storage temperatures: -4º F to 185º F (-20º C to 85º C)

Durability - 50,000 times read and write

USB 3.0. Backwards compatible to USB 2.0 USB 1.1

Writing speed: 10 MB/S-17 MB/S

Reading speed: 30 MB/S-50 MB/S