Features: The electronic metronome provides beat type adjustment (0-9), tempo range control (40-208 beats/minute), human voice on/off. Digital display for easy reading, 2.2-inch large LCD screen is clear to read the data at a glance. Built-in 1300mAh rechargeable battery powered, more humanized and environmentally friendly. Easy to use via the control buttons, compact and lightweight, convenient to carry. With earphone jack for silent use, not disturbing others. Supports volume adjustment through the thumbwheel. The metronome will automatically power off if not in use for 3 minutes. With a folding support stand on back, it is easy to stand on the flat. A reliable practice partner for music lovers who play guitar, piano, violin, drum, guzheng and more. Specifications: Material: ABS Tempo Range: 40-208bpm Beat: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Preset: Tempo=120, beat=4 Auto off: 3 minutes Power Supply: 3.7V 1300mAh rechargeable Li battery Item Size: 150 * 64 * 25mm / 5.91 * 2.52 * 0.98in Item Weight: 135g / 4.78oz Package Weight: 171g / 6.03oz Package Size: 18.5 * 70 * 40cm / 7.28 * 2.76 * 1.57in Package List: 1 * Metronome 1 * Type-C Cable 1 * Manual (English)