Through the stepless speed change button, the speed can be adjusted according to the capacity. Two power supply options are available: install 4 AA batteries (not included) or connect power using a USB cable. The decanter has a continuous working time of ten minutes and will automatically stop; it must be restarted to begin again. When battery power is low, the working light turns red. Portable and suitable for most occasions, this pocket-style wine dispenser is lightweight, compact, and easy to carry. Use fresh batteries to dispense red or white wine. A perfect wine accessory for home use, parties, picnics, or celebrations such as birthdays, weddings, anniversaries, graduations, retirements, and housewarmings. Color: Black. Material: ABS. Package Contents: 1 x Decanter, 1 x USB Cable. Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.