Youkits FG-01 1-72Mhz Antenna Analyzer. It's fully assembled and ready to use. Please only use 14500 lithium battery with our battery holder that comes with FG-01. 14500 lithium battery is 3.7V each, total 11.1V. Portable design easy to carry 10 MEM Comes with 14500 battery holder 1-72Mhz automatic analyser, Easy operating Color display with detail information Center freq step:1K,10K,100K,1Mhz Scan width:10K-50Mhz in 12 step Size: H 9.8cm x W 5.8cm x D 3.8cm Weight: 250g (380g with battery) Also has Antenna impedance scan function! New IC and new switching power supply, 50% power consumption.