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, bass, 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 mode Beat : 7 mode PRE beat :1~6 Metronome sound: Human voice, tik tok, cowbell Tempo: 30~250bpm Tuning mode: Chromatic, Guitar, Bass, Violin, Ukulele Tuning precision: ±1 cent A4 range: 430~450HZ Tone Generator range: 2A-6A Generator precision: ±0.1 cent Power: Built in lithium battery Dimensions: 122(L) x 70(W) x 23(H)mm Weight: 110g                        Aroma AT-01A Tuner              (Without battery)                                     Features:              Compact size clip-on tuner for chromatic/ guitar/ bass/ 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-01A              Color: Black              Tuning Items: Chromatic(C)/ Guitar(G)/ Bass(B)/ Ukulele(U)/ Violin(V)              Pitch Range: 440Hz              Tuning Accuracy: ±0.5 cent              Power Supply: 1 * CR2032 Battery (not included)              Item Weight: 18.5g / 0.