PDT Eno Ukulele clip on tuner. EnoET33UClip-OnUkuleleTuner Description ProductDescription... Easy to use clip on tuner for ukulele. Clip onto head stock, play a string and the tuner displays the note played. Tune up or down to get the needle straight on the note for perfect tuning every time. Suitable for adults and children. Can also be used chromatically for alternative tunings.