Kingston SDHC Class4 Memory Card: Secure digital card is built to meet the security, capacity, performance and environmental requirements inherent in emerging image, video and audio consumer electronics devices Capacities: 1GB-2GB-4GB-8GB-16GB Dimensions: 0.94 x 1.25 x 0.08 inches (24 x 32 x 2.1mm) Operating temperature: -13 to 185 deg. F (-25 to 85 deg. C) Storage temperature: -40 to 185 deg. F (-40 to 85 deg. C) Voltage: 3.3V Compliant: with the SD card association card specification Small: about the size of a postage stamp (24 x 32 x 2.1mm) Secure: built-in write-protect switch prevents accidental data loss Simple: as easy as plug-and-play Reliable: lifetime warranty Economical: low power consumption is easy on device's batteries