Features: Shot speeds up to 90MB/s; transfer speeds up to 95 MB/s. Engineered to capture 4K Ultra High Definition. UHS Speed Class 3 (U3). Built for and tested in harsh conditions; temperature proof, water proof, shock proof, and x-ray proof. Security: Built-in write-protect switch prevents accidental data loss. Operating temperature: -13F to 185F (-25C to 85 C). Storage temperature: -40F to 185F (-40C to 85C).