WMT-940 is an easy to use 4-in-1 guitar chord tool for guitar players. With tuner, metronome, tone generator and chord grids in one machine, it can satisfy all your needs and provide a detailed reference for hand positions. Built-in lithium battery and is rechargeable via USB cable. Portable size with 6.35mm input &amp; output jacks and 3.5mm headphone jack for convenient carry and usage. Excellent for guitar practice and playing.<br><br><strong>Features:</strong><br>Guitar chord tool + tuner + metronome + tone generator, 4-in-1, with powerful functions and easy operations.<br>6 types of chord (major/minor/7/9/major7/minor7) and 372 chord hand positions, more accurate tuning.<br>Supports guitar tuning via built-in mic or 6.35mm input jack, with guitar &amp; chromatic tuning modes.<br>3 measurement voice for helping you keep track of beats easily in the metronome mode.<br>With built-in lithium battery and can be charged via the included USB cable, suitable for long time usage.<br>Large LCD display and foldable stand design for easy viewing and operation.<br>Other features: 3.5mm headphone &amp; 6.5mm output jacks, volume &amp; gain control knobs, LED indicators and speaker.<br><br><strong>Specifications:</strong><br>Material: Plastic<br>Color: White + Black<br>Chord Hand Positions: 372<br>Tuning Mode: Chromatic, Guitar<br>Signal Input: Mic or 6.35mm input jack<br>Signal Output: 3.5mm headphone jack, 6.35mm output jack, speaker<br>A4 Frequency: 430-450Hz<br>Tuning Range: A0 (27.5Hz)-C8 (4186.01Hz)<br>Tuning Accuracy: ±1 cent<br>Beat:0, 1, 2, 3, 4, 5, 6<br>Tempo: 30-250BPM<br>Power Supply: Built-in lithium battery, 3.7V 850mAh<br>Item Size: 12 * 7 * 1.5cm / 4.7 * 2.8 * 0.6in<br>Item Weight: 105g / 3.7oz<br><br><strong>Package List:</strong><br>1 * Guitar Chord Tool<br>1 * USB Charge Cable<br>1 * User Manual(English &amp; Chinese)