Stir your coffee, tea, or protein shake hands-free. This stainless steel mug uses a magnetic spinner at the base to mix your drink automatically at the push of a button. Insulated design keeps drinks hot or cold. Available in USB-rechargeable or battery-powered models. Leak-proof lid included.Specifications:• Capacity: 380ml• Material: Stainless steel• Weight: 0.3kg• Colors: Coffee Brown, White• Power Options: USB-rechargeable or battery-operated• Lid: Included (leak-proof)What's Included:• Magnetic mixing cup ×1• USB cable ×1 (rechargeable models only)• Lid ×1Each description above is based strictly on the supplier's original product specs. No features have been invented or exaggerated.