Performance Up to 170MB/s read speed; up to 90MB/s write speed* Dimensions (H x W x L) 0.43 in x 0.59 in x 0.04 in ( 10.92 mm x 14.99 mm x 1.02 mm) Operating temperature -13ºF to 185ºF (-25ºC to 85ºC) Storage temperature - 40ºF to 185ºF (-40ºC to 85ºC) Compatibility Compatible with microSDHC™, microSDXC, microSDHC UHS-I3, microSDXC UHS-I3, microSDHC UHS-II, and microSDXC UHS-II supporting action camera, interchangeable-lens camera, drone, smartphone and tablet host devices
Overall Review: Did speed check on my Desk top and found Red speed only 19.2 MB/S, and Write only 18.2MB/S. Notified Customer service for return. Got email from 3C Expert (an online e-commerce driven business). Asked me to check with USB 3.0 port. My Desk top has only USB2.0 port. Recheck speed with my Lap Top with USB 3.0 port speed read and write went up to 85 MB/S and 56 MB/S. Decided to keep my order. Thank you 3C Expert