... of optical fiber AV6416 Palm OTDR (FTTx network tester) AV6416 palm OTDR is the newest instrument designed ... of Chinese and English 11. Built-in lithium battery with high capacity for over 10 hours of operating ... Single-mode Distance Range 4, 8, 16, 32, 64, 128, 256km Sampling Resolution 0.25, 0.5, 1 ... 240V, 50/60Hz, 1.5A Built-in Lithium battery 4400mAh,7.4V,operating time≥10 hoursDimensions210×100×60 ...