I bought this tuner because of it's rechargable battery, since my previous clip tuner is showing humidity and temperature when it's "off" which means that when I need it every now and then, the battery is drained and the CR2032's are a bit expensive to use for only a single tuning. Also the environmental issues...
Got the tuner, charged the battery and tuned my guitar - so far so good. But when I came back to it some time later (I mostly use a pedal tuner, so the clip is for backup) the battery was drained again. I recharged it, used once and the next time I picked it up it was empty again. So after a bit of testing I found that the battery doesn't hold any charge. I reported it to Thomann and they sent me a new one, but this one is really struggling to tune the 6-th string and is absolutely unusable for bass. The chromatic mode shows you the whole alphabet when tuning a string so you have to use the designated guitar tuning mode to the job done.
I really like the swivel design and the coloured screen is amazing. Also I like that in addition to the rotary dial it shows in numbers how far off you are which makes finetuning a lot easyer but unfortunately the tuner part being incompetent ruins the good idea. Also you can accidentally change the tuning from 440 to 441, 442 etc. without noticing or change the tuning mode which is done by pushing the power button, so when turning the device off and not pressing the button long enough you change the tuning mode to say ukulele or violin and the next time you use it starts up in this mode and can cause some confusion.
Since it's so cheap I'm going to keep it for tuning at home but I wouldn't take it to band practice an certainly wouldn't go on stage with it.
