For use with only the UV3 not the UV3XL.

• The new advanced light has 10 brightness levels, 5 individual LED’s for optimal brightness, auto off (after 4 minutes), allows you to light up your level and is 100% waterproof.
• To light up your level, hold the power button for 2 seconds.
• The 5 LED’s brightly illuminate colored dots and fiber without the need for an up pin or big ugly battery packs with loose wires.
• Takes 2x 2025 batteries, find them here.