Fluke LinkIQ LIQ-DUO-VFL-LFD Testing Device - Cable Testing, Wireless Connectivity Testing, Network Testing, Network Troubleshoot, Wiremap, Cable Fault Testing, Fiber Optic Cable Testing, Twisted Pair Cable Testing - USB - Network (RJ-45) - Network (RJ-11) - Twisted Pair - 10 Gigabit Ethernet - 10Base-T, 10GBase-T - 1Number of Batteries Supported - AA - Battery Included - Battery Rechargeable - Lithium Ion (Li-Ion):