Delkin 8 GB Secure Digital (SD) PRO Class 10 163X Memory Card DDSDPRO3-8GB Speed Performance 163X (X=150kB/s) Size - 0.94 x 1.25 x 0.08 (24mm x 32mm x 2.1mm) Weight - 0.09oz. (2.9g) Operating Temperature - -13 F to 158 F (-25 C to 70 C) Security - Built-in write-protect switch prevents accidental data loss