Capacity Notes：128M=approx. 110M-115M256M=approx. 220M-230M512M=approximately 460M-480MThis is the difference in calculation between the manufacturer and your PC, please google "storage product capacity" for more information. PC defines 1GB = 1.073741824 billion bytes, while the market defines 1GB = 1.00 billion bytes100% real capacity, via H2testw.Please do not use cheap card readers to test speed will be reduced due to low quality card readers.

Product description：

Name： Memory card

Capacity ： 128M,256M,512M

Applicable equipment： Desktop computers, cell phones, laptops and more devices

Operating temperature： - 13°F to 185°F (- 25°C to 85°C)

Storage temperature： - 40°F to 185°F (- 40°C to 85°C)

Size:49*18*10mmweight: 14.2g

Package included：1X Memory card