Ceramic thermal , heating and lengthening the heating to achieve rapid temperature rise, truly achieve rapid temperature rise, and truly achieve rapid glue release. Built-in trigger push device, in line with people's habit when operating the switch. Leak-proof rubber sleeve design, more secure. With a use indicator light, you can clearly understand the opening status and whether there is electricity. Intelligent chip , built-in chip control, control the heating temperature within a suitable range, and place overheating. Specification: Name: Cordless Hot Glue- Power: 40W Use voltage: DC 20V Warm-up time: 90s Glue output: 5-10g/min Charging time: 2-3 hours Battery life: 1-1.5 hours Applicable: suitable for batteries diameter: 7mm Mouth size: 1.8-2.0mm Note: 1. The battery in the product picture is only used to describe the function of the product. 2. We do not batteries. The supporting batteries of this product need to be purchased separately. Material: Plastic + Metal colour: yellow + black Package Contents: 1 x Lithium battery glue- 30 x Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.