This model printer is a portable handheld inkjet printer. It has the advantage of convenient carrying and stable performance. It quips a quick-drying ink cartridge and rechargeable lithium battery. The battery is located at the tail of the handle. Direct editing on the 4.3-inch touch color screen. The machine can swith Simplified Chinese, Traditional Chinese, and English with one click. The printer comes with storage functions. support U disk storage. Points for Attention:? Installation attention: 1.Ensure that the cartridge is inserted at a 45° angle. Do not use brute force to avoid damage to the metal stylus. 2.If there is too much dust in the working environment, it is strongly recommended to use an air compressor to remove internal dust. 3.Insert and remove the ink cartridge must be under turn off the machine state. 4.If you do not use the machine for more than 5 minutes, you must remove the ink cartridge from the machine and use the buckled card. ?Operational Attention: 1.If there is no operation, please turn on the screen saver function of the printer to ensure the battery's long life. 2.When the printing effect is blurred, please confirm the printing distance of the nozzle and the object to be within 5mm. 3.When ink tailing occurs in the printing, please wipe the nozzle gently with a special wiping paper. 4.If the environment dust is a lot, please use air pressure guns to clean the dust. Common Problem Solving ( no words/blurry): 1.Please check if the ink cartridge has ink and whether the ink cartridge is installed. 2.Reprint the document. 3.Whether the power is full, charging, and then printing. 4.Look at the surface of the nozzle. if there is any debris, please wipe it gently. 5.Check if the parameters are correct. Spray Printing Graphics: It can spray various trademark patterns, graphics can be imported through U disk. Automatic Spray Printing: Date, Time, Serial Number, etc. ( It can be varied with the time of day). Specifications: CPU QUAD Core: 1.4Hz