Feature: 1. [4 Speed Adjustment] This caulking gun features 4 adjustable speeds, 1 gear is 77 to 86mm/min, 2 gear is 115 to 121mm/min, 3 gear is 152 to 158mm/min, 4 gear is 190 to 196mm/min, can be precisely controlled, suitable for both professional engineering installations and home projects. 2. [Auto Retraction System] The motor is designed with an automatic retraction system, prevents material from leaking when stopped. The motor instantly reverses upon release of the trigger, releasing pressure in the tube to maintain a clean workshop and project area. 3. [Built in LED Light] Equipped with bright LED light, this caulk gun allows for use in dark spaces such as lofts, crawl spaces, garages, and more, ensuring visibility and ease of use in all environments. 4. [High Efficiency] In professional settings, using the 4th gear speed can complete a glue application in only about 2 minutes, greatly improving work efficiency. 5. [Versatile Applications] Ideal for home renovations, kitchen countertop installations, floor repairs, and caulking tasks, this cordless caulking gun is a practical tool for various projects. Specification: Item Type: Cordless Caulking Gun Material: ABS Battery: 20V Lithium Battery x 1, Battery Capacity: 2Ah (Equipped) Working Current: 1A LED Light Current: 200mA LED Luminous Flux: 400-450LM Working Pressure: 250kgs Working Time: 240 Minute LED Color Temperature: 6000-6500K LED: 70-75Ra . Package List: 1 x Cordless Caulking Gun 1 x Needle 1 x User Manual 1 x Adapter 1 x Battery Note: Before filling, the accompanying needle can be used to pierce the sealing inside.