Features: Discover the visual fault locator, a rechargeable fiber optical cable tester with a powerful 15MW/30MW lasers for precises and efficient fault detection in fiber cables. This tester ensures a wide ranges of applications while providing a stable and strong light source for clear visibilities. For networking engineers, technicians, and optical device researcher, this tool is a must having for anyone involved in fiber optical installation, maintenance, or research. Whether in the field, data centers, or during nighttimes operations, the builtin led lighting and usb charge capability make it a for catv telecommunications and integrated wiring systems. The metal constructions and ergonomic designs of this fiber optical test pen ensures long lastings performances and ease of use, making it a reliabled asset for any professional toolkit. Specifications: Component:Metal, Cceramics Color:Black Size:Approx.130x27mm/5.12x1.06inch Styles:15MW/30MW Package Includes: 1pcs Visual Fault Locator note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.