Built-in motor, you don't need to manually press the trigger reciprocally, glue comes out uninterrupted, Tilswall hot glue gun will make your DIY easier by providing more convenience for your craft. More importantly, Tilswall's glue gun is electric with 4Ah capacity lithium battery, and glue can be released without repeated pressing, without dripping glue, and the desktop is clean after use. If you're looking for a reliable and efficient glue gun, Tilswall is the way to go. There is a 30% off new product discount. https://www.tilswall.com/products/cordless-auto-hot-glue-gun