High quality light, very bright. I only use it on lowest setting because I do not want to blind oncoming drivers, but at this setting it is more than enough to see where you are going, full power is more like a high beam on a car so if you are going off road or are in the country side then you may want to use it on full. Battery life is also very good. It comes with a phone app, but apart from a firmware update I have not had any reason to use this app.