Mainstays Warming Coffee Mug, 12oz. Stainless Stee

Updated September 4, 2026

Brand: Mainstays Condition: New - open box(Sold AS IS ) In Packaging?: Yes Assembly Required?: No Damaged?: No Functional?: Unable to Test Missing Parts?: No Model: 9299 Star Rating: 0.0 UPC: 841351192996 12oz. Self-heating coffee mug Three adjustable temperature levels: 135 , 140 , or 145 F Built-in rechargeable battery keeps your beverage perfectly warmed or up to 2 hours, or keep it on the charging coaster for prolonged heating Auto-shutoff safety feature after 3 hours on charging coaster, or is mug is empty Anti-spill lid keeps drinks in your cup, not on your lap Perfect for coffee, tea, hot chocolate, and more Mug is safe to handwash with sturdy stainless-steel design Includes charging coaster, lid, and power adapter Specs: Input 12V/1.5A; Power 18W; Battery Capacity 7.4V/2000mAh.

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