Model Number:Guitar Accessories Type:Tunerandamp;Metronome Worked as TunerandMetronome,good helper for novice. Small and exquisite appearance,it is convenient to carry. Two ways to pick up signal,with built-in mic or pickup cable. Super bright backlight,LCD display(5.2 x 2.6cm),it can provide excellent visibility. With a holder on back,it is easy to stand on the flat. Powered by 2 x AAA batteries(NOT INCLUDED). Auto power off function,the device will turn off automatically if there is no signal present or operation in 3mins. It can be used for the tuning of guitar,chromatic,bass,violin and ukulele. Tuning mode:Chromatic,guitar,bass,violin,ukulele Pitch:430-450Hz Tempo precision:0.5% Tempo range:30-260bpm Beat:0,1,2,3,4,5,6,7,8,9 Rhythm:9 types Tuning mode:Mic,Pickup cable Power:2 x AAA batteries(not included) Display size:.5.2 x 2.6cm Product weight:65g Package size:19 x 13 x 1.8cm Package weight:121g Colour:Black material:plastic Package Contents: 1 x tuner 1 x color card 1 x pickup clip Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.