3-in-1 design: tuner, metronome and tone generator.The housing is made of high quality and environmentally friendly plastic, which is and durable.The largest and unique color LCD display ensures easy viewing in any conditions.Equipped with rotating clip to adjust to the perfect viewing angle.The clip opening is non- and can be clamped on the instrument stably.Sensitive and accurate tuning for chromatic, guitar, bass, ukulele and violin.It will automatically turn off for more than 5 minutes without operation and the data will be saved.Energy saving and very practical.Power supply:2 x AAA batteries (not included) Colour:Black Material:ABS+ electron Package Contents: 1 * Tuner 1 * English manual Only the above package content, other products are not included.Note: Light reflection 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.