Ember Stainless Steel Edition Temperature Control Mug Brand new - Still in manufacturer sealed packaging Manufacturer notes: Details: Built-In Rechargeable Battery – 1.5 Hour Battery Life Temperature Range – 120°F - 145°F Smart LED – Indicates When Beverage has Reached Your Perfect Temperature Safe to hand wash – Fully submersible up to 1 meter deep. Ember App – Set Your Temperature and Customize Presets. iOS and Android compatible. Description: The new Ember Mug²: Metallic Collection features three brilliant hues perfect for any occasion. Whether you are at your desk or sipping by the fire, Ember Mug² in Copper, Gold and Stainless Steel will make every morning shine by allowing you to set your precise drinking temperature and maintain it for approximately 1.5 hours, so your hot beverage is perfect from the first sip to the last drop. Specifications: Number of Pieces: 2 Dimensions (Overall): 4.2 Inches (H) x 4.3 Inches (W) Capacity (Volume): 10 Ounces Service For: 1 Includes: 1 Mug, 1 Coaster Used For: Hot Beverages Material: Polycarbonate, Stainless Steel, Plastic Care & Cleaning: Hand Wash