Electronic Digital Metronome with Timer, Universal Metronome with Volume and Beat Speed Control, Battery or USB Powered, for Guitar, Piano, Violin, Drum This electronic metronome features a digital display, adjustable beat speed, volume control, and can be powered by batteries or USB cable. It includes a non-slip bottom and multiple functions, making it a reliable practice tool for musicians playing guitar, piano, drum, violin, guzheng, and other instruments. Features: - Offers beat types (0 to 9), tempo control (40208 beats per minute), electronic and human voice options, and timer settings (15/30/45/60 minutes) - Clear digital display for easy reading - Powered by 3 AAA batteries (not included) or via Type-C USB cable - Compact, lightweight design with user-friendly control buttons and large dial - Includes headphone jack for silent practice and thumbwheel for volume adjustment - Ideal companion for music practice and a thoughtful gift for musicians Note: 1. Remove batteries when using USB cable for power. 2. Size and color may vary slightly due to manual measurement and lighting conditions. Specifications: - Color: Black / White / Light Blue / Light Purple (optional) - Material: Plastic - Beat Settings: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 - Tempo Range: 40208 beats per minute - Voice Options: Electronic Voice, Human Voice - Timer Settings: 15 min, 30 min, 45 min, 60 min - Power Supply: 3 x AAA batteries (not included) or Type-C USB - Item Size: 140 x 70 x 45 mm / 5.51 x 2.76 x 1.77 in - Item Weight (without battery): 130 g / 4.57 oz - Package Size: 14.5 x 8 x 5 cm / 5.71 x 3.15 x 1.97 in - Package Weight: 175 g / 6.17 oz Package List: 1 x Electronic Metronome 1 x USB Cable (Type-C) 1 x User Manual (English)