I use it for about 3 months. I have to do with six concerts. I can only confirm the previous ones opinion. For scne it really is a must. Gnralement trs was little time to adjust or fit between the pieces. With this tuner it is no doubt, the lighting is perfect, everything is done quickly and prcisment. So one less worry on scne. For the service, the price is justified. As home to play against in my opinion useless. I would do without this choice hsiter. It even comes with the 9V battery included.