LEKATO Metronome Tuner Tone Generator 3 in 1 Function Digital Metronome Mini Portable USB Rechargeable Multifunctional for Musician Guitar, Piano, Trumpet, Pipes, All Instruments -3 in 1 Function & USB Rechargeable : Tuner, Metronome,Tone generator function 3 in 1. With 10 rhythm and 7 beat. Built-in rechargeable lithium battery, can be recharged through USB interface.-MIC Pick up & Support Headphone : With microphone pickup, and can recognize 27.5Hz ~ 4186.0Hz sound. The metronome sound can be used with earphones.-Powerful MetronomeFunction : With Pre-beat (Up beat) function. Player can have ready time to start the song. Vertical metronome, a direct view of the beat will be given. Two metronome sound mode : Human voice and Electronic beat voice.-Intelligent Function : Auto power off function, the device will turn off automatically if there is no signal present or operation in 5mins. Each shutdown can automatically save the current parameters.-Wide Application: Extended frequency range for all instruments, can be used for Piano and wind music, twelve chromatic, guitar, ba, violin, ukulele and other instruments. Features: -3 in 1 Function : Metronome, Tuner, Tone generator-Pre-beat (Up beat) Function. Player can have ready time to start the song.-Vertical metronome (downbeat indicator), a direct view of the beat will be given.-Auto-off Function. The machine will automatically turn off if there is no operation for 5 minutes.-Saves settings upon power-off. Specification: Rhythm : 20 modeBeat : 7 modePRE beat :1~6Metronome sound: Human voice, tik tok, cowbellTempo: 30~250bpmTuning mode: Chromatic, Guitar, Ba, Violin, UkuleleTuning precision: 1 centA4 range: 430~450HZTone Generator range: 2A-6AGenerator precision: 0.1 centPower: Built in lithium batteryDimensions: 122(L) x 70(W) x 23(H)mmWeight: 110g Aroma AT-01A Tuner(Without battery) Features:Compact size clip-on tuner for chromatic/ guitar/ ba/ ukulele/ violin.One-button operation, easy and convenient to use.LCD display, 2 colors backlight: green- in tune, white- out of tune.Rotatable design, allows you to have the best viewing angle.For helping you to find the accurate tuning of your instrument.Specifications:Model: AT-01AColor: BlackTuning Items: Chromatic(C)/ Guitar(G)/ Ba(B)/ Ukulele(U)/ Violin(V)Pitch Range: 440HzTuning Accuracy: 0.5 centPower Supply: 1 * CR2032 Battery (not included)Item Weight: 18.5g / 0.7ozPackage Size: 5.5 * 4.5 * 3.5cm / 2.2 * 1.7 * 1.4inPackage Weight: 30g / 1.1ozNote:The instrument showed in the picture is not included.Package List:1 * Tuner1 * User Manual(English & Chinese)