Solid will not break easily. Good battery capacity. Slim. Light. Variations Black Blue and Red. * Guitar Bass Ukulele and Violin. Designed for beginners and Pro. * Fast and accurate. Easy and intuitive to use. Chromatic tuner. * Standard tuning. Drop tuning. Use it with a Capo too. * Turn 360 Degrees. Energy-saving function. Excellent visibility. Calibration 440Hz.