Features:
Power/mode switch, it can select the type of instrument (Guitar or bass).
Tuning guide LEDs, it will light up different lights (Green or red) according to different tunes.
Note indicator LEDs，these LEDs indicate the note of the string you are tuning.
Microphone for acoustic guitar & bass.
Input jack for instrument with pickup, it can connect the output cord or pickup of the instrument to the input jack.

Specifications:
Color: Black
Material: Plastic
Battery: 2 * AAA battery 1.5V (not including the battery)
Item size: 9.7 * 5 * 1.5cm
Package size: 10 * 5.4 * 2.0cm
Item weight: 34g
Package weight: 43g

Package including:
1 * Guitar and bass LED automatic tuner
1 * User manual