SD Card -
SF-4U6

Price: HK$89

General 
Memory Size4 GB
Usable Capacity (Approx.)3.6 GB
Minimum Write Speed30 MB (SDR50)
Operating Voltage2.7 V ~ 3.6 V
Operating Temperature Requirements-25ºC ~ 85ºC
Dimensions (W×L×D) (Approx.)24 x 32 x 2.1 mm
Weight (Approx.)2 g