286811 Feature: Blue， white and green backlighting negative， large font display， unique design Tuning objects: chromatic， bass， guitar， violin， ukulele Color: Random Size: About 38 x 46 x 66 mm Guitar falling tone tuning: b， bb Ukulele tuning: C， D A4 frequency: 440HZ Power supply mode: 1 x Button battery CR2032 ( not provided ) 1 x Tuner 1 x English user manual In original package