Features: The Intelli Imt1000 has a very loud tone generator/pitch pipe and metronome... Easy to select tempo or note using the thumb whee. Pitch Generator (Pitch Pipe) Features: 88 Notes A0- C8 - pitch is changed quickly with thumb dial in center of the unit. Volume control is continuously adjustable by a knob. Pitch shift 430 Hz to 449Hz in 1Hz steps. Pause button - simply press the button to start the pitch - press again to stop the pitch. Making pitch changes while performing in a Barber Shop Quartet, chorus, etc... can be made with one hand - the same hand that presses the pause button. **Note the pause button silences the sound, but once the thumb wheel (pitch selector) is turned the pitches are then produced, sounding all notes between the destination note. Metronome Features: Tempo Range - 30 to 250 beats per minute. Accented beats 0,1, 2,3,4,5,6,7 with 3 different tones for the strong beat - a chime / weak beat - a drum / subdivisions - wood block. 8 subdivisions of beats- eighth notes, triplets, sixteenth, triplet and sixteenths with middle rests. When accented beat is set - the light flashes red for the first beat and green on the other beats. Two memory channels for storing rhythms and tempos - with the flip of the switch you can quickly go to a different rhythm/tempo. Volume control is continuously adjustable by a knob. The Intelli Imt-100o has Large LCD screen simulates swinging of pendulum. Tempo is quickly selected with center circular selector. All settings are maintained after the unit is turned off. Italian Tempo chart is on the back of the Imt1000 (Largo-Adagio etc.) Specifications: Earphone jack - Earphone not included Uses a 9 volt battery -included - or has plug for an AC adapter. Flip out metal stand. Available in color pictured. Dimensions: 1.75"x 5.75"x .75" - weight 6 oz Includes vinyl carrying case. Made in Korea.