The cup is a 400 ml glass mug powered by USB for convenient beverage mixing. Key benefits Fast, clumps stirring: a threepronged stirring rod delivers torque for uniform mixing with minimal effort. Portable and practical: USBpowered design easily connects to laptops, power banks, or USB adapters, supporting use at desks, in dorms, or on the go. Everyday convenience with style: designed for busy professionals and students who value a practical, stylish accessory in their routine. Versatile beverage prep: suitable for smooth juices, shakes, or protein drinks to support quick nutrition and refueling. Specifications Capacity: 400 ml Material: Glass Power: USB powered Stirring mechanism: Threepronged stirring rod for torque and uniform mixing Use scenarios Office desk: mix coffee, milkshakes, or protein drinks during a busy workday for a quick, smooth beverage without transferring to another container. Gym or fitness area: prepare postworkout shakes or juice blends right after training for speed and convenience. Home or dorm: whip up breakfast smoothies or study snacks with a simple, reliable setup that fits into daily routines.