Thomann CTC-50 Red, Clip-On Tuner, Chromatic tuner, Super fast tuning, Bright colour LCD display, 360 Degree rotatable display, Tuning modes: Chromatic/Guitar/Bass/Violin/Ukulele/Ukulele D, Calibration: 440 - 449 Hz, Sensitive piezo sensor, Automatic stand-by mode, Dimensions LWH: 53 x 43 x 4 mm, Weight: 29 g, Finish: Red (matt rubberized), Incl. 3V (CR2032) Lithium battery