Feature: 1. Automatic Mixing: The printer cartridge has automatic mixing function, which is efficient and labor saving, and has strong practicability. 2. Excellent Materials: Made of excellent PE and stainless steel materials, corrosion resistance and side leakage prevention. 3. Easy Operation: The cartridge is equipped with a level sensor and stirring motor, which is easy to operate and stable in performance. 4. For UV Printer: The cartridge capacity is 500ml, suitable for UV printers, and can directly replace the used ink cartridges. 5. Power Supply: Can be powered by 3V button battery (not included), with LED display, more time saving. Specification: Item Type: 500ml Ink Cartridge Material: PE + Stainless Steel + PCB Colour: Black Cartridge Capacity: 500ml Motor Voltage: 24V Applicable Ink Tube Size: 4mm x 3mm Adapter Battery: CR2032 3V button battery (not included). Package List: 1 x Ink Cartridge1 x Switch Note: Please use a suitable ink tube to avoid leakage during use.