Features: 【Wide Voltages Ranges】: Supports input voltages from DC6V to 12V, accommodating various power configurations. 【Five Brightness Levels】: Offering five distinct brightness modes to meet user needs for light intensity in diverse environments. 【High-Power Compatibility】: Specifically designed for powerful 6V LED chips like 6VXHP50 and 6VXHP70, ensuring stable drive and optimaled performances. 【High Efficiency】: Optimized circuit design enhances energy utilization efficiency, extending battery running time. 【Thermal Design】: Excellent heat dissipation ensures safe and stable operating of LED chips under highly powered conditions. Specifications: [Component]: PCB, metal [Product size]: Diameter: 22m/0.87in, 26mm/1.02in Optional [Product weight]: 7g [Input voltages]: DC6~12V (2~3 lithium batteries connection in series) [Output voltages]: about 6V (suitable for 6V lamp beads) [Output current]: The current is different according to different lamp beads, whichever is actual. [Lamp bead power]: 20~40watt LED (6V lamp bead required) [Gear]: Five gears Package Includes: 1PC Lamp bead circuit board driver board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution