Features BETTER TESTING The fiber optic power meter is designed for a wide test range from -70 to +10dBm, the fiber optic power meter allows higher accuracy. EASY WORKING This optical cable tester has a sturdy internal structure and sensitive chip, responds very quickly, just plug and play. The Wavelength Our optical performance tester can test 850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nm and 1650nm 10 kinds of wavelengths. EASY CARRYING The optical cable meter is designed to be compact size and light weight, and very easy to carry for indoor and outdoor use. Reliable Use The fiber optic performance tester has a calibration and calculation function for relative performance. The digital fibre optic cable is easy to use. Specification: Item Type:Fiber Optic Power Meter Model: AUA-MC7. Material: ABS Power supply: 3.7V 650mAh polymer battery, comes with built-in battery. Power measurement range: -70~+10dBm Probe range: InGaAs Wavelength Range: 850-1700nm Standard wavelength (nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Display Resolution: Linear Display: 0.1%; Logarithmic Display: 0.01dBm Working temperature: -10~+60℃. Storage temperature: -25~+70℃. Automatic shut-off time: 10 minutes. Continuous battery life: no less than 40 hours. Package list: 1 x fibre optic power meter. 1 x user manual (English language not guaranteed). 1 x neck strap. 1 x USB charging cable. Note: Please note that the new type and old type of this product are sent at random, and make sure you do not mind before ordering. Package List 1 x Optical Fiber Power Meter 1 x User Manual 1 x Lanyard 1 x USB Charging Cable