Stainless steel key shaped casing. Designed to be fastened securely to a key chain. Excellent product durability. Capless design. Minimum operating temperature 0c. Maximum operating temperature 60c. Compatibility: Windows XP, Vista & 7, Mac OS X v 10.0 or later, Linux v 2.4.0 & above. 2 Year Warranty. Wx Dx H: 62x 23x 4mm. Weight: 16g. Capacity: 8GB.