Please consider RTC Module - Super Capacitor as alternative product
This is a Mini Real-Time Clock module, it design for Raspberry Pi, but it also can be used to Arduino
USD$5.49
Discontinued
Free Insurance Included On Us
Flexible Payments with PayPal Pay Later
Avoid Import Fees: Ship Tax-Free from Local Warehouses
1 on 1 Support | 12-Month Warranty | 30-Day Return Policy