Features: 1.As an analog electronic drum, it helps beginners learn and exercise percussion instruments such as drum kits and jazz drums. 2.With counting function, it can accurately test your beat speed or percussion speed. 3.The digital LCD display has a wide dynamic range of performance and the data is clearly visible. 4.The output volume can be adjusted and the headphone jack can be connected to the headphone for practice. 5.The use of silica gel pad and ABS shell can be installed with a bracket, which is very convenient to use and carry. specification:Item Type: Drum Metronome Size: Approx. 8in Material: Environmentally friendly silicone + ABS Power Supply Type: 2 x AAA battery(included) or 5V regulated DC power supply Battery Capacity: 700mAh Rhythm Type: 7 kinds Time Value: 0,1,2,3,4,5,6,7,8,9 Percussion Speed Measurement And Counting Function: Set time adjustable range 5-99 seconds Speed range: 30-280bpm How to Use: 1. Install the battery 2. Power Button: Press and hold the power button for 2 seconds to turn on or off. In metronome mode, tap the change button to pause or start the metronome; in tap mode, tap the change button to immediately switch to the metronome function with an operation prompt sound; in count mode, tap the change button to reset immediately Go to the last set time and start again. 3. Button Mode: In Any Mode Of Booting, Lightly Pressing The Change Button will switch to three function modes: Metronome, Tap tap, Tap tachometer count (count). 4. Button Beat: In Metronome mode, tap the Beat button to change the Beat value and save it as a predetermined value; in Tap mode, tap the change button to change the Beat value and save it as a preset value; in Count mode, Tap the Beat button to switch whether the drumhead is sounded at the same time; and there will be notes displayed on the LCD. 5. Key Tempo: In Metronome mode, tapping the two keys will change the Tempo value; in Tap mode, tapping the two keys will be invalid; in Count mode, tapping the two keys will change the value of Tempo. The set tap time is saved as a preset value. 6. Key Rhythm: In Metronome mode, tapping this key will change the Rhythm type; in Tap mode, tapping this key will change the Rhythm type and save it as a preset type; in Count mode, tapping this key will be invalid . PackageList:1 x DrumMetronome 1 x USBCable 1 x Headphone Cable 2 x Battery 1 x User Manual