PNY Micro SD Full Mobility Pack “4in1” 1GB. Internal memory: 1024 MB, Flash card type: Micro Secure Digital (MicroSD), Read speed: 15 MB/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 %