Description: Features: brand new and high quality. The latest ultra thin light power meter red light source. Test precision, fine workmanship, easy to carry, completely replace the optical power meter and red pen 2 products. This price is equipped with 10 kilometers red light source. Light power red light source one machine function: can measure 850/980/1300/1310/1490/1550/1625nm and other 7 wavelength of the optical absolute power, test range: -70dBm~+10dBm. 10MW red light source can measure the distance is about 10 kilometers, completely replace the optical power meter and red pen 2PCS products. Specifications: Material: Plastic Color: shown as pictures Size: 17.582.5cm/6.893.150.98in (Approx.) Quantity: 1 Set Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: (With retail package) 1 X Optical Power Meter Visual Fault Locator (Battery NOT included) 1 X Carrying Pouch