Requires SparkFun gator:bit for easy use with micro:bit
- RV-3028 RTC module
- I²C bus interface
- Tracks year, month, date, weekday, hours, minutes, and seconds
- External event input with time stamp function
- Low power: 40-60nA at 3V
- Four pads for power and data
- Rechargeable 3V lithium coin cell battery