The Realtime clock & microSD breakout keeps accurate time and supports external memory through a microSD. The breakout features the DS1307 Realtime clock with battery holder for reliable time readings in case of breakout power outage. The RTC/SD Breakout also features a microSD card slot adding external memory to read/write pictures text files audio and much more. Add accurate time measurement and external memory to your next Arduino project!

100% Arduino Compatible
Operating voltage: 3.3V ? 5V MAX
counts seconds minutes hours date of the month month day of the week and year with leap year compensation valid up to 2100
microSD card support
5v to 3.3v regulator for SD card operation.
microSD SPI interface
DS1307 RTC I?C interface
CR1220 battery required (not included)