Three adjustable temperature levels: 135°, 140°, or 145° F Built-in rechargeable battery warms your beverage for up to 2 hours, or use with charging coaster for prolonged heating Auto-shutoff safety feature activates after 3 hours on the charging coaster or when the mug is empty Anti-spill lid helps prevent messy accidents Perfect for coffee, tea, hot chocolate, and more Durable stainless steel mug is safe to handwash Set includes charging coaster, lid, and power adapter Specs: Input – 12V/1.5A; Power – 18W; Battery Capacity – 7.4V/2000mAh Explore more beverage items from Mainstays