Type-C interface, Charge everywhere. Lithium battery: stable power management, charging and use. High-precision OPM: 850/1300/1310/1490/1550/1625nm, Accuracy ±0.2dB, 2.5mm universal connector for FC/SC/ adapters. Stable and strong light source: Easily penetrate long-distance optical fibers, Use together to improve work efficiency. Hide without revealing: Built-in remote cable module, integrated with the host. No fear of dim surroundings: Click ON/OFF button, start backlight function. Store and View at any time. Specifications:B:20C V30 30KM Color: Material:plastic Package Contents: 1 * Mini 4-in-1 Optical Power Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.