Custom 10 Oz Ember Temperature Control Smart Mugs feature a 18/8 Grade stainless steel double wall construction and a handy sipper; designed for home or office, these innovative mugs not just keep your coffee hot but even allows you to set an exact drinking temperature, so your beverage is never too hot, or too cold. Smart LED indicates when beverage has reached its perfect temperature; select your temperature range as 120°F - 145°F (50°C - 62.5 °C) on the mug or with the Ember app. Built-in Auto-Sleep function intelligently senses when to turn on and off. Ember then maintains your chosen temperature for up to 1.5 hours with the Ember Mug² when off the charging coaster; hand wash recommended; compatible with Apple devices operating system: iOS 12.0 and above and Android devices operating system: 8 and above. Order these custom metal tumblers right now to get free design, free online proofs and best price guarantee offers. Request a quote to know wholesale savings for Custom 10 Oz Ember Temperature Control Smart Mugs