I have just acquired this tuner today, before I had a Korg GA40 then I used the tuner in my Zoom G2. Now I think I'm not going to secede from pitchjack! I love the fact that this thing is so tiny! It works with a button battery and any way we could never drag bigger! Once the jack is folded really tiny. Then it plugs directly into the jack guitar is lighter and it fits super fast. It's very readable even for my guitar which is the jack under the body, since the pitchjack can be bent into any position. It's very simple to use, readable, and accurate (margin of error is less than 1 percent). The plastic looks cheap but for me the ideal tuner, and for less than 20 euros I will not hesitate to buy it back if I lose it. In addition it works for 6/7cordes guitars, basses, one can agree with caveats, and I just found out that when turned off there is a function flashlight!

Edict of July 5, 2010: now I have a Polytune but I kept this little tuner troubleshooting or when I travel, why there is no more practical.