This smart coffee mug from Ember is perfect for those who want to enjoy their hot beverage at the perfect temperature. With temperature control technology, your coffee or tea will always be at the ideal temperature, just the way you like it. The mug is designed with a sleek black color and a handle for easy use. It has a 10oz capacity and is perfect for adults who want to enjoy their favorite hot beverage. The mug is made by the brand Ember and features solid color pattern and a food and drink theme. It is also a great gift for coffee or tea lovers who want to enjoy their beverage at the perfect temperature.no directions in box nib never used