The item is a professional and practical module data logging shield V1.0, which is mainly made of PCB board and plastic mateirals, and works Compatible with UNO, Duemilanove, , Leonardo or / Mega R3 or higher. You can - to to a file in any FAT16 or FAT32 formatted card, you can read any drawing, spreadsheet or analysis program. Built-in 3.3V regulator is both a reliable reference voltage and also reliably runs cards that require of power to run. Features - Color: as shown in the pictures. - Material: PCB board and metal. - Size: 7x5x2cm - and Module Data Recorder Data Logging Shield V1.0. - interface works with FAT16 or FAT32 formatted cards. 3.3V level shifter circuitry prevents damage to your card - Real time clock (RTC) keeps the time going even when the is unplugged. The battery backup lasts for years - Included libraries and example code for both and RTC mean you can quickly Prototyping area for soldering connectors, circuitry or sensors. - Built-in 3.3V regulator is both a reliable reference voltage and also reliably runs cards that require of power to run - Works Compatible with UNO, Duemilanove, , Leonardo or /Mega R3 or higher. /Mega R2 or lower are not supported. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 1