PNY MicroSDHC Full Mobility Pack “4in1” 4GB. Internal memory: 4096 MB, Flash card type: Micro Secure Digital (MicroSD), Read speed: 15 MB/s. Width: 15 mm, Depth: 11 mm, Height: 1 mm. Data retention: 100 year(s), Mean time between failures (MTBF): 1000000 h. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -40 - 85 °C, Operating relative humidity range: 0 - 95 %