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: Designed for energy efficiency, powered by two CR123A batteries (batteries not included). 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 Only the above items are included; other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3cm.