• DS1307 I²C Real-Time Clock IC (RTC)
• AT24C32 32KBit (8KByte) I²C EEPROM memory  IC
• CR2032 Back Up battery holder (battery not included)
• Fresh new CR2032 can provides 1 year of timing for DS1307
• Breaks out DS1307 clock pin to offer clock signals for the microcontroller.
• Can be cascaded to other I²C devices.
• 3.3V and 5.0V compatible.
• Breakout I2C and Power pins for external microcontroller interface, example Arduino or PIC
• Dimension: 27mm * 28mm * 8.4mm

Packing list

x1 unit Real Time clock (RTC) DS1307 12C