The tuner works well, but it does not swivel, so there are few good ways to mount it for easy viewing

Ditto everyone who commented on lack of adjustment for easier viewing

If you read the instructions they tell you how to position the Mini for optimal viewing

it does not affix to the head stock securely and once affixed it can not be adjusted for optimal viewing.

A lot of folks reviewing the S-1 complained that they could not read the display because they were not able to rotate the screen for a better view