The first rechargeable metronome tuner is built with a rechargeable battery inside supporting a very long use time, and saving you the trouble of replacing batteries frequently. It comes with an USB Charging cable allowing you to charge via power bank and PC anytime you need. Tap function allows you to enter your own tempo by each 2 taps. Timer function to set practice time length at 15 minutes, 30, 45 and 60 minutes. digital metronome helps improving your timing in a rich variety of musical styles. 3 in 1 device-A metronome, tuner and tone generator, all housed in a pocket-sized device, can be used for acoustic and electric guitars, bass, ukulele, violin, mandolin, piano and like saxophone and trumpet etc, with three ways to pickup: microphone pickup, pickup clip(included) and guitar cable pick up directly. versatile tumer--The fast and accurate tuner boasts a wide detection range of A0-C8, and A4 tuning range of 430-450Hz, with tuning modes catering to different instruments. We got you covered for whichever instruments you play. humanized digital metronome-With tempo range of 30-250, 0-9, and 8 different rhythms, this electronic metronome improve your timing in a rich variety of musical styles. Adjustable volume and headphone jack makes it possible to practice at your preferred environment. Colour: Black Material: ABS Package Contents: 1 x Musical instrument metronome 1 x Phone clip 1 x Charging cable 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.