Korg quote -
KORG’s clip-on tuners can be easily attached to the headstock of your instrument for convenient and accurate tuning. The new PitchCrow-G is the latest addition to KORG’s line up of clip-on tuners for guitar and bass. The PitchCrow-G is the most compact of all fully-featured clip-on tuners. Its streamlined design includes everything you need to tune accurately, quickly and is approximately 20% smaller and lighter than previous KORG models. Included with the PitchCrow-G is a vivid full-color LCD and dedicated guitar/bass modes, as well as a new ultra-high precision fine tuning function that allows for accuracy as great at ±0.1 cents. Battery life is also approximately three times longer than previous units, allowing for approximately 24 hours of continuous operation. Forty years after it developed the world’s first needle-type meter tuner, KORG is proud to set the new standard for accuracy and reliability in clip-on tuners: the PitchCrow-G.

Ultra compact and light-weight, the straightforward design allows for faster, easier tuning
Bright, full-color LCD for high visibility
Ultra-high precision tuning with accuracy as great at ±0.1 cents
Dedicated guitar/bass mode, with flat/capo settings also provided
First string over-winding warning to prevent string breakage
Approximately 24 hours of battery life

Spec -

Scale  : 12-note equal temperament
Detection Accuracy : ±0.1 cent (fine tuning)
Tuning Range (sine wave) :Chromatic: A0 (27.50Hz) – C8 (4186Hz)
   Guitar: B1 flat5 (46.25Hz) – E4 capo7 (493.88Hz)
   Bass: B0 flat5 B0 flat5 (23.12Hz) – C3 (130.81Hz)
Reference Tone : 436 – 445 Hz (1 Hz steps)
Flat Tuning : 1 – 5 semitones (In semitones steps)
Capotasto Tuning : 1 – 7 semitones (In semitones steps)
Dimensions (W x D x H) : 63 x 56 x 25 mm / 2.48 x 2.20 x 0.98 inches (minimum size)
Weight :  21 g / 0.74 oz. (including battery)
Battery Life :  Approximately 8 hours (tuner continuously operating, A4 input)
Included Items :CR2032 lithium battery (3V) x 1 (for verifying operation)