Extremely accurate
Seven-octave response
Arrow-styled display
Color-changing backlight: red = out of tune; green = in tune
Calibration from 430Hz to 450Hz
Elegantly simple controls
Microphone and 1/4" guitar inputs
Manufacturer's limited lifetime warranty
Tuning range: 7 octaves: 27Hz - 6,000 Hz
Tuning precision: Better than one cent
Battery life: 30 hours of continuous use
Power supply: 3 volts
Battery type: AA size; two batteries required (not included)
Dimensions: 2.55" H x 4" W x 3/4" D
Weight: 2-1/2 oz.