1、High Efficiency: The meter has a wide measurement range of ‑70 to +10dbm, the measurement is fast and accurate, no need to wait for warm up. 2、Excellent Performance: Adopt sensitive chip and sturdy internal structure, the output distance is up to 10km, has relative power calculation and calibration function. 3、Long Battery Life: The battery consumption is low, which ensures a long battery life, and can work continuously for 40 hours. 4、7 Wavelength: Feature 7 wavelengths for usage, which are 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm, can meet your most needs. 5、Easy Operation: The meter is plug and play, with display screen, LED light and SC FC ST adapter, which is very convenient for operation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store