The black ST-8 Super Tight is another in Snark’s mystifying line-up of clip-on tuners. Its specs are similar to the red ST-2, but the ST-8 lacks that model’s built-in mic and has a lower-resolution display.
Snark’s ST-8Hz Super-Tight is similar to the ST-8 but offers an optional tuning mode showing frequency to 1/10th of a Hertz. Using this feature, however, requires tuning your strings in a specific order. Not very practical.
This mini LCD tuner from Tomsline (aka Aroma) is probably identical to products offered by Kliq, Tetra-Teknika and Neewer. This one is priced in the middle of the price range. Warranty terms are unknown.