Description from Amazon USA :
- Worked as Tuner & Metronome, good helper for novice.
- Two ways to pick up signal, with built-in mic or pickup cable.
- Super bright backlight, LCD display(5.2 * 2.6cm), it can provide excellent visibility. With a holder on back, it is easy to stand on the flat.
- Auto power off function, the device will turn off automatically if there is no signal present or operation in 3mins.
- The guitar showed on the picture in not included.Powered by 2 * AAA batteries (NOT INCLUDED).