Features: High-quality material: Made of aviation aluminum alloy, strong and durable, not easy to break, and can be used for a long time. Child safety: The flashlight comes with a child safety lock. When not in use, turn the switch key to the red dot and pull it out to disconnect the power supply. Easy to use: On/off button, power lock protection key, and anti-slip handle ensure stable holding; adjustable focus for easy operation. Exquisite workmanship: This laser pen features fine craftsmanship and high-quality materials, providing a comfortable and reliable user experience. Multiple uses: This laser pointer can be used for presentations, teaching instructions, and other applications. Notice: 1. Actual color may be slightly different from the image due to different lighting conditions. 2. Please allow 1-3 cm deviation due to manual measurement. Material: Aluminum alloy Size: Approximately 15.8 x 2.2 cm (6.22 x 0.86 inches) Wavelength: 532 nm Power: 100 mW Battery: 1 x CR123 battery (not included)