Casio watch. Had it for ~20yrs. It died today but I just replaced the battery and it's back again! I had only changed batteries twice: 10 yrs ago and today. Truly BIFL
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Casio Women's Digital Casual Watch, Black/White LA20WH-1A - Walmart.com
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New G-Shock DW-5600 and DW-6900 have new modules with LED light and longer battery life