Features:
-40 ° C to +85 ° C temperature range, timing accuracy kept at ± 5ppm (± 0.432 sec / day)
The module itself can be adapted to 3.3 V and 5 V system
Complete clock calendar functions include seconds, minutes, hours, day, date, month and year timing , provide valid until the year 2100 leap year compensation
1 Hz and 32.768 kHz output
RTC Clock Module has the characteristic of low power consumption
Accuracy of ±3 digital temperature sensor

Specifications:
Temperature range: - 40~85
Weight: 2g

Package included:
4 × RTC Clock Module( battery are included)