F15 — Motorized Stainless Steel Vacuum Mug. Aircraft engine-inspired 350ml mixing cup powered by 2xAA batteries with an 8000 RPM magnetic motor. Blends coffee, protein shakes, or powder drinks in seconds. Specifications: Capacity: 350ml Material: 304 stainless steel Motor: 8000 RPM magnetic motor, 2xAA batteries Suitable for hot and cold beverages Branding: Laser / fiber engraving on stainless steel body. Product price listed doesn't include Branding Services.