Features:<br />24C32 32K I2C EEPROM memory<br />Using LIR2032 rechargeable lithium battery with charging circuit<br />Solve the problem of no literacy of the DS1307 with backup battery<br />Support timming 1 year of the DS1307 after fully charged<br />Size: 27mm x 28mm x 8.4mm<br />Leads to the DS1307 clock pin provides a clock signal for the microcontroller.<br />Other I2C devices can be cascaded.<br /><br />Package Contents:<br />1X DS1307 Module  (Battery not included )