Smart Self-Cooling & Heating Tumbler

An insulated cup keeps a cold drink cool for a while. This tumbler goes a step further: a built-in semiconductor cooling chip actively chills the drink, so the last sip is as cold as the first.

Cool or warm, one button
A temperature range of −5°C to 55°C (23°F to 131°F) covers iced water in July and warm coffee in January. One button switches modes.

How it cools
An ETC semiconductor cooling chip chills quickly and runs quietly — no compressor, no ice, low energy use. It charges over USB, so it works at a desk, in the car, or outside.

A clean-tasting interior
The inner lining is SUS316 food-grade stainless steel, so drinks stay free of any metallic taste.

Details

• Temperature range: −5°C to 55°C (23°F to 131°F)
• Cooling: ETC semiconductor chip — no ice needed
• Interior: SUS316 food-grade stainless steel
• Charging: USB
• Sealed, dustproof lid · easy-clean interior · leak-proof seal
• Portable wrist strap included
• Colors: Orange, Teal, Purple, Blue