JT-20 Rotatable, Backlight Tuner Features: * Adopt leading software processing technology and solve the problem of big power consumption arising from backlight, it can give off the same light just like what the power-saving lamp works but with less power consumption of several times. * When the unit is not in use, the backlight of it will gradually become dark like that of mobiles, even during its pause, the display can be clearly seen. * During the pointer indication, it can give off 3 kinds of color lights---red, yellow and green to indicate the pitch. * Adjustable visual angle, which makes you feel free for operation. * Sensitive and accurate tuning. Specifications: Display mode: LCD backlight display Tuning mode: MIC, CLIP Tuning items:Chromatic, guitar, bass, violin A4 tone frequency range:410-450Hz Power:CR2032x1(3V) Weight:50g Size :67(W)x46(H)x44(D)mm