The Zigzag WS Channel RV 2 Indicator is a popular and free Forex indicator for MT4. It is a useful tool for traders as it helps them identify changes in momentum and direction. The indicator is based on the Zigzag indicator and the Williams Percent Range indicator, and it is designed to measure the strength of a trend and to detect reversals. The indicator works by plotting the Zigzag lines on the chart and then adding the Williams Percent Range indicator, which helps to identify potential reversals. It is a great tool for both novice and experienced traders as it provides accurate signals and helps to identify potential reversals.