4GB micro SDHC4 (No Box & Adapter) TS4GUSDC4 Featuring a minimum write speed of 4 MB/s .Transcend’s Class 4 microSDHC cards are a smart and cost-effective choice for you to capture and store more of your everyday life with your mobile gadgets. All microSDHC cards are comprehensively tested for compatibility and reliability, and carry Transcend’s Limited Lifetime Warranty. Each card contains built-in ECC (Error Correction Code) that automatically detects and corrects errors during data transfer, and also utilizes a sophisticated wear-leveling algorithm for consistent long-life operation. Features: Fully compatible with SD 2.0 Standards Only 10% the size of a standard SD card SDHC Class 4 compliant Easy to use, plug-and-play operation Built-in Error Correcting Code (ECC) to detect and correct transfer errors Complies with Secure Digital Music Initiative (SDMI) portable device requirements Supports Content Protection for Recordable Media (CPRM) Allows In System Programming (ISP) for updating firmware Supports auto-standby, power-off and sleep modes Limited lifetime Warranty Specification: Size: 11mm x 15mm x 1.0mm Op. Voltage: 2.7V~3.6V Op. Temperature: -25°C(-13°F) to 85°C(185°F) Durability: 10,000 insertion/removal cycles Weight: 0.4g Compatibility: Ideal upgrade for mobile phones and digital cameras