This miniature optical power meter features a compact structure and stable performance. It guarantees high measurement accuracy for wavelengths of 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, and 1625nm. Accurately measure the loss of passive optical components such as optical fibers and optical cables. Features: Its lightweight and small size make it easy to carry. ABS material provides a comfortable feel. The detector is highly sensitive, stable, and accurate. User self-calibration. Rechargeable large-capacity lithium battery supports long-term continuous work. LED light function for easy operation in dark environments. LCD color screen with ultra-low power consumption provides a clear display that's easy on the eyes. Automatically saves the last tested wavelength upon shutdown. 40 sets of data are automatically overwritten and stored cyclically. USB charging: universal interface, plug and play. Measurement Range: G1000: -70 + 3 G1050: -50 + 26 G1010: -70 + 10 Power Connector: 2.5mm SC/FC/ST Nominal Wavelengths: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Automatic Shutdown Time: 10 min Resolution: 0.01 dB Battery: 3.7V, 400mAh Item Size: 125 x 34 x 17 mm / 4.9 x 1.3 x 0.7 inches Item Weight: 52g / 1.8 oz Package List: 1 * Optical Power Meter