CASIO G-SHOCK GW-M5600-1JF Black Tough Solar Digital Watch
Amazon.com: CASIO G-Shock GW-M5610U-1JF [20 ATM Water Resistant Solar Radio Wave GW-M5610 Series] Shipped from Japan : Clothing, Shoes & Jewelry
Got this GShock GW-M5600 since 2008. Battery went to low only once after I started getting into Seikos. It's my time reference when I set my automatic watches :) : r/BuyItForLife