This fiber tester is made of premium material, which can withstand long-lasting use. Features the aluminum alloy, canvas and ABS material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color:As Shown-Material:Aluminum alloy, canvas, ABS-Size:17.50X2.50X2.50cm/6.88X0.98X0.98in-Size: 4.70X1.00X0.90cm/1.85X0.39X0.35in Output power: 5mWBattery: 2 x AA (not included)- Easily identify fiber breaks, bad connections, bends or cracks. Great for finding the right fiber to splice or finding breaks quickly.- This fiber optic tools is perfect for on-site testing because of their features such as constant output power, multi-interface adaptive, low battery warning, long battery life, and long-distance detection.- 2.5mm Universal Connector: The connector of this fiber optic tester is suitable for ST, SC, FC, LC interference in different round and square optical cables.- High thermal conductivity, stable and powerful, easy to get through long distance optic fiber.- The excellent production process makes it have a good texture, can serve you for a long time, and will not be easily damaged.Packing list: 1 x fiber tester1 x storage bag1 x manual1 x lanyard