Features: Efficient LED Driver Board delivers stable current/voltages output for uniform brightness and extended LED lifespans, for flashlights and headlamps requiring performances. Featuring adjustable dimming modes and universals compatibility with multiple LED type, this 28.1x19.3mm PCB integrates seamlessly into lighting projects and professional fixtures. for electronics hobbyists and outdoor enthusiasts customizable illuminations solution for flashlights, fishing gear, or portable worklights. Optimize visibility during nighttime camping, underwater diving, or emergencys repairs with its overload protected circuitry and space saving design. Engineered with overcurrent/overvoltage safeguards, this driver board ensures operations across extreme temperatures and demanding electrical environments. Specifications: Materials: PCB Size: 28.1x19.3mm Package Includes: 1PC Flashlight Driver Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.