Model: 16.8V (large thrust), one electric one charge . Ergonomic design, adapt to a variety of scenes of beauty seam engineering: beautiful seams on the floor; beautiful seams in the bathroom; beautiful seams in the tiles. Reinforced one, aluminum frame: the solid aluminum frame is balanced; refuse to weld. One-touch cruise control, lock button: Press one button to release your finger and evenly dispense glue for a long time. Smart lithium battery, fast charging, long-lasting battery life: large capacity, low power consumption, and more durable work.Charge for two hours and work for four hours. Speed control knob for easy construction and uniform dispensing: One-button speed control, you can easily control the speed as needed. Four-bar drive, powerful power, 680kg large thrust: four-rod push rod pushes at the same time, bold push rod produces more uniform glue and stronger thrust. Automatically return the gun to release the force to prevent leakage of glue: automatically stop the force and stop the machine when the hand stops, to prevent the glue from leaking.