If you own a stringed musical instrument, it is a good idea to have an electronic tuner.  The electronic tuner we have for sale is the Korg CA-30 Chromatic Tuner.  This compact tuner fits easily in any instrument case.  It operates in both meter (automatic) and sound (manual) modes.  It uses two AAA batteries that last approximately 100 hours.  It is 4.1" wide x 2.52" tall x .6" high.  The default setting (and mandatory setting for accurate pitch) is calibrated at 440 Hz. If you purchased an instrument from us, the cost is $45.95. If you did not purchase an instrument from us, the purchase price is $49.95.