There are five colors to choose from(Sheet jelly pig Black pig Orange peel pig Green skin pigs Colocasia pig)*USB2.0 read about 15 to 20 MB/s, write 5 to 8 MB/s *USB bus power supply (4.5 V to 5.5 V) *For keeping at least 10 years *Working environment temperature 40 ℃ ~ + 70 ℃*Keep the temperature - 50 ℃ ~ + 80 ℃The system supportsWindows98 /XP /Vista/ Win7/ Win8Mac os8.6 and above. Capacity: 8GB