Check the listing for details. Electronic Digital Metronome with Timer Universal Electronic Metronome with F1V1. Color: Black/ White/ Light Blue/ Light Purple (Optional), Condition: New. Listed at 21.99 USD. The electronic metronome features digital display, speed control, control, or USB powered, bottom and more functions. Its a reliable practice partner for music who guitar, piano, drum, guzheng and more. Features: The electronic metronome provides type (0 to 9), speed control (40-208 /min), electronic and human voice, timer (15/ 30/ 45/ 60min). Digital display for easy reading, clear at a glance. 3 AAA (not included) or Type-C USB cable powered, more humanized. Easy to use via the control buttons and a large turntable; compact and lightweight, convenient to carry. With earphone jack for silent use, not disturbing others; supports adjustment through the thumbwheel. A reliable practice partner for music who guitar, piano, violin, drum, guzheng and more. gift choice. Note: 1. Please remove the if you want to use USB cable to it. 2. Size and color may be slightly different due to manual measurement and different conditions. Thanks for understanding. Specifications: Color: Black/ White/ Blue/ Purple (Optional) Material: : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Tempo: 40-208 /minute Voice: Electronic Voice, Human Voice Timer: 15min, 30min, 45min, 60min : 3 * AAA (not included) or Type-C USB Powered Item Size: 140 * 70 * 45mm / 5.51 * 2.76 * 1.77in Item Weight (without ): 130g / 4.57oz Package Size: 14.5 * 8 * 5cm / 5.71 * 3.15 * 1.97in Package Weight: 175g / 6.17oz Package List: I8852B 1 * Electronic Metronome 1 * USB Cable (Type-C) 1 * User Manual (English)