PQI 60X. Internal memory: 2048 MB, Flash card type: Secure Digital (SD). Width: 32 mm, Depth: 24 mm, Height: 2.1 mm. Mean time between failures (MTBF): 1000000 h. Input voltage: 2.7/3.6 V. Operating temperature range (T-T): -25 - 85 °C, Storage temperature range (T-T): -40 - 85 °C, Operating relative humidity range: 25 - 95 %