brand bulk/lot micro sd 128mb 1gb 2gb 4gb 8gb 16gb class 4 tf memory card microsdhc

storage capacity: 4gb/8gb/16gb/32gb/64gb/128gb interface: usb 2.0 environment temperature: -40c - +70c storage temperature: -50c - +80c usb service voltage: 4.5v-5.5v storage lifetime: more than 10 years use a-class chip, can be erased repeatedly for 100,0000 times operating system: win98/me/2000/xp/ vista/win7 /win8, mac os 9.x/linux2.4 or above usb connection:support plug & play. easy to read and read in high speed ,no need drive/power supply only plug in.