Magnetic Self-Stirring Technology - Unique small magnet design. The bottom of the cup body has a built-in magnetic device that drives the magnetic rod to stir the drink in the cup at high speed. Double-click the touch switch on the cup body, and the high-quality hydraulic motor will start quickly. USB Charging - Just use the included USB data cable to connect the cup to any USB port. Fully charges in 4 hours. Safe and environmentally friendly. IPX6 Waterproof - The self-stirring cup features a seamless one-piece cup body. The charging interface is upgraded to help prevent water entry. Made of IPX6 waterproof material and 306 stainless steel for a more durable and healthy experience. Easy to Clean - Pour neutral detergent into the cup or add water directly, then press the motor button for automatic cleaning. Shake to create a vortex, then rinse clean. Do not soak or wash in microwave or dishwasher. Perfect Gift - Cute mug design, ideal for family, friends, or colleagues who enjoy coffee, hot chocolate, protein powder, or other mixed beverages. Great for home, office, travel, Father's Day, Mother's Day, Christmas, and more.