Material: Made of high-strength materials, durable, with large rubber buttons for easy operation. Configuration base: Includes multiple installation bases to adapt to different platforms. Application: Compatible with OpsCore ARC specification guide rail. Energy saving: Powered by two CR123A batteries (batteries not included), designed for energy efficiency. Applicable scenes: Suitable for outdoor equipment and film/movie props. Battery life: Over 100 minutes (varies based on usage). Product note: Users need to purchase 2 x CR123A batteries separately (not included). Color: Mud Color Material: Nylon Size: 12x5x2cm / 4.7x1.97x0.87in Package Contents: 1 x Helmet Light Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement allows an error of +/- 1-3cm.