Features - Color: as shown in the pictures. - Material: PCB board and metal. - Size: 7x5x2cm - and Data Logger Module Data Recorder Data Logging Shield V1.0. - SD interface works with FAT16 or FAT32 formatted cards. 3.3V level shifter circuitry prevents damage to your SD 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 SD and RTC mean you can get going quickly Prototyping area for soldering connectors, circuitry or sensors. - Built-in 3.3V regulator is both a reliable reference voltage and also reliably runs SD cards that require a lot of power to run - Works Compatible with UNO, Duemilanove, Diecimila, Leonardo or ADK/Mega R3 or higher. ADK/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