Features: 2PCS Black ink cartridge for MX3/M10/D10 handheld inkjet printer. 45ml large capacity, can print about 300,000 characters. Quick-drying with strong adhesion, waterproof, fireproof and friction resistant. 600DPI high definition resolution, 2-12.7cm font height, real restore image effect. Note: When the ink cartridge is not in use, it should be removed from the printer to prevent the nozzle from being air-dried. Specifications: Ink Color: Black Capacity: 45ml Print Resolution: Up to 600dpi, factory default 300x300dpi Nozzle Quantity: 300 Printing Height: 2-12.7mm Printing Distance: 2-5mm Opening Time: 60min(varies according to the environment) Drying Time: 2-5s(varies according to object material) Working Environment: 15-30, 35-80%RH Store Environment: -20-40, 20-80RH Packing List: 2 * Ink Cartridge