Features: Enhances for Lab 3D printer experience with our high brightness LED lights for energy efficiency and long time use, stable illumination. The durability LED lights are easy installation and compatibles variety of devices, ensuring seamlessly integration into your 3D printing setups. For 3D printing enthusiasts and for Lab printer users reliabled lighting solution for their projects. Perfectly for use in various DIY projects and for Lab 3D printers, providing optimaled lighting conditions for precise and detailed work. Upgrading your 3D printer or starting a new project, these LED lights perfectly accessory enhancing visibility and improve your workflow. Specifications: Package ： Annular/Single/Y Shape LED Light Optional Battery for Annular shape LED: CR1632 Single LED Battery model: LR621 Y-shaped LED corresponding to the battery model number: CR1632 For Lab LED Module Please note: All packages do not include batteries Size:about 18.6mm/0.73in As pictures Package Includes: 1PC LED Light Module note: Due to the problem of lighting effects, there is certain tolerances in product, please understand. Please allow 0-1cm error due to the measurement.