Micro SD Card -
SR-4A4

Price: HK$69

General 
Memory Size4GB
Usable Capacity (Approx.)3.6GB
Speed ClassClass 4
Operating Voltage2.7~3.6V
Operating Temperature Requirements-25℃~85℃
Dimensions (W×L×D) (Approx.)11 x 15 x 1 mm
Weight (Approx.)1g