The mini optical power meter has a compact structure and stable performance. Provides high accuracy of measuring wavelengths of 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm and 1625nm. Combined with an optical laser source, it can accurately measure the loss of optical fiber, cable and other passive optical devices. Characteristics: Light weight and small size for easy portability. ABS material, comfortable feeling. Highly sensitive detector, precise stability, accurate measurement. Self-calibration by the user himself. The large rechargeable lithium battery ensures continuous operation for many hours. LED light function, convenient to work in dark environment. Color LCD screen, ultra-low power consumption, clear display does not hurt your eyes. Automatically save the last tested wavelength when shutting down. 40 datasets are automatically covered and stored in cycles. USB charging: universal interface, plug and play. Technical data: Model: G1000, Measuring range: -70 3 Power meter interface: 2.5mm SC/FC/ST Calibration wavelength: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Auto power off time: 10 minutes Resolution: 0.01 dB Battery: 3.7V, 400mAh Item Size: 125 * 34 * 17mm / 4.9 * 1.3 * 0.7in Product Weight: 52g/1.8oz Package Weight: 120g / 4.2oz Packing list: 1 * optical power meter