LONG OUTPUT DISTANCE: This 10mW visual fault locator output strong red light goes 10 kilometers , high effective power circuits allows for stable power.METAL PAINT DESIGN: It is designed with a stainless steel head and aluminum body to prevent crash and dust, and the case ground design prevents ESD damage efficiently.WIDELY USED: The 2.5mm universal connector of the detector is compatibly designed for ST, , , LC interferes both in a circle and square shape of different fiber optic cables. Test for both single-mode and multi-mode cables.Shell Material: Aluminum Pen-typeOutput Optical Power: more than 10mWOutput Distance: 10KMWavelength: 650nm 20nmUse Temperature: 0-60Storage Stability: -20-70Operating Model: Both CW and Pulse availableApplicable interface: ST///LC (LC interface requires additional adapter)Power: 2 AA batteries (included)Colour: Black+OrangeMaterial: MetalPackage Contents:1 * 10mW Pen-type VFL1 * Carrying Bag1 * Lanyard1 * English Manual2 * AA BatteriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.