High-Performance Speed: 80X. Mechanical write protection switch on adapter. MiniSD adapter allows it to be used in standard SD Card slots. Supports Content Protection for Recordable Media (CPRM). Security level complies with Secure Digital Music Initiative (SDMI). Compliant with RoHS requirement. Dimensions:20mmx21.5mmx1.4mm. Weight:1g. Standardized-complies with the SD Card Association card specifications. Durability: 10,000 insertions(minimum). Power Requirement:2.7V~3.6V. Operating Temperature: -25C~85C. Storage Temperature:-40C~85C. Humidity: 8%~95%. Lifetime Warranty.