Fluke Networks Versiv DSX2-8000-PRO/GLD Cable Analyzer - Twisted Pair Cable Testing, Wiremap, Cable Length Testing, Propagation Delay, Delay Skew, Resistance Measure, Insertion Loss Measurement - LCD - Network (RJ-45) - Twisted Pair - Wireless LAN - 40 Gigabit Ethernet - 7.2V - Battery Built-in - Battery Included - Lithium Ion (Li-Ion):