1. How to use: The navigation light has a three-stage switch, followed by double flash, quick flash, and breathing mode. Please attach the transparent protective primer to the pre-installed position, then affix the light using the adhesive backing. Optional mounting with a base. 2. Charging: When charging with the included charging module, the indicator light is red during charging and turns blue when fully charged. If using a CB86, PL8, A6, or similar charger, ensure the current does not exceed 0.1A. 3. Product specifications: Size 43mm x 13mm x 11mm, weight 4g, battery capacity 75mAh, voltage 3.7V, with overcharge protection. Compatible with: RC Cars, Airplanes, Helicopters, Boats, Robots, etc. Color: As shown Material: Plastic + Metal Package Contents: 3 x Navigation Light Only the above package content; other items are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3cm.