Feature 13 In 1 Device: The Metronome tuner combines a tuner, a metronome, and a tone generator, all housed in a stand up and pocket size device with a 500mah battery. 2With Vocal Counting: The metronome is built with vocal counting for more concentrative practice and let's you adjust your desired tempo quickly and easily. 3Pickup Way: Built in microphone pickup and external pickup clip, foldable bracket is easy to use. Small and delicate appearance, easy to carry. 4Easy To Read: Metronome tuner with large display, user friendly, especially in dark environment. Adjustable volume makes it possible to practice at your preferred environment. Professional and easy to use. 5Sturdy And Durable: Built strong and resistant for beginners and professionals. This tuner metronome was built to last for long time.Item Type: Ueteto Metronome TunerProduct Material: PlasticWeight: Approx. 152g / 5.4ozBattery Capacity: 500mahBattery Type: Lithium Battery (Shipped With Built In Battery)Tuning Range: A0(27.5hz) To C8(4186.0hz)Music Calibration Items: Twelve Equal Rhythm, Guzheng, Guqin, Pipa, Dulcimer, Erhu, Banhu, Jinghu, Zhongruan, Morin Qin, LiuqinTone Adjustment Mode: Manual Tone Adjustment, Automatic Tone Adjustment .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Metronome Tuner1 x Pickup Clip1 x Charging Cable