Voltage: The tool and battery are rated for 20V/21V operation.
LED Light: It is equipped with a high-brightness LED work light for visibility in dark or tight spaces.
Adjustable Speed: Similar models typically offer multiple (4 or 6) adjustable speed settings to control the flow of sealant or adhesive for precision application.
Anti-Drip System: These guns often feature an anti-drip or automatic retraction system that pulls back the plunger when the trigger is released to prevent messy spills and material waste.
Compatibility: This type of unbranded tool is often designed to be compatible with a specific major brand's battery system (like DeWalt or Makita) and accepts standard 10oz/300ml cartridges.