Recently, I have been using a very handy trading tool, and the results have been surprisingly good. Since the first time I applied this signal, Bitcoin has already risen by over 10%. After I issued the double buy signal two weeks ago, the relative strength index has continued to climb, showing a strong momentum. Relying solely on this one tool, you can catch several profit opportunities. This simple and effective method is definitely worth trying for those who want to improve their trading success rate.