ITEM NAME:High Precision DS3231 AT24C32 IIC RTC Real Time Clock Memory Module For Arduino 100% brand new and high quality Material: Electrical Components Color: See pictures The device incorporates a battery input, and maintains accurate timekeeping when main power supply is disconnected DS3231Offered in commercial and industrial temperature ranges RTC save seconds, minutes, hours, day, date, month, and year information A precision temperature-compensated voltage reference and comparator circuit monitors VCC state, detect power failures, provide a reset output, and to automatically switch to the backup supply when necessary In addition to high-precision timekeeping outside, DS3231Also has some other function, these features extend the system host additional features and options Length: 5cm/1.97" Width: 2cm/0.79" No Retail Package Quantity:1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 1Pc x DS3231 AT24C32 IIC High Precision RTC Real Time Clock Memory Module Arduino New.Width: 2cm/0.79". Length: 5cm/1.97". Material: Electrical Components. Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Also note that monitor settings may vary from computer to computer and may distort actual colors.