takeMS SDHC-Card Class 6 4GB. Internal memory: 4096 MB, Flash card type: Secure Digital High-Capacity (SDHC), Read speed: 6 MB/s. Weight: 2.5 g. Data retention: 10 year(s). Operating temperature range (T-T): -15 - 65 °C, Storage temperature range (T-T): -20 - 65 °C, Vibration resistance: 15 G