Silicon Power 4GB Micro SDHC. Internal memory: 4096 MB, Flash card type: Micro Secure Digital High-Capacity (microSDHC). Weight: 6 g, Width: 11 mm, Depth: 1 mm. Input voltage: 2.7 - 3.6 V. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -25 - 85 °C, Operating relative humidity range: 8 - 95 %. Colour of product: Black