Features: x -new wristwatch-style design, stylish and portable. Vibrate strongly on wrist, ankle or arm to remind you of beat and tempo. x Short press the button to switch modes, including speed, beat and rhythm type, which can use with rotating knob to change corresponding status. x Built-in drum-machine mode, sound reminder and light reminder, feature high performance. Support BT connection for broader use. x Band Mode: can connect with multiple devices and sync rhythm data automatically. x Inbuilt 200mAh rechargeable battery, offers up to 25 days ultra-long standby time and 3H continuous working time. x Skin-friendly silicone strap is soft and comfortable to wear. Detachable design makes it easy to remove and install. x Widely suitable for various musical instruments, such as guitar, bass, ukulele, piano, violin, drum, etc. Note: 1. Please read the user manual carefully before using this product. 2. The metronome does not support waterproof function. Please be careful during use. Specifications: Material: ABS Color: Black Battery Capacity: 300mAh Standby Time: Up to 25 days Dial Size: 47 x 47mm Dial Thickness: 16m Strap Width: 22mm Overall Length: 270mm Item Weight: 47g or 1.66oz Package Size: 30.4 x 7.5 x 3.1cm or 11.97 x 2.95 x 1.22in Package Weight: 206g or 7.27oz Package List: 1 x Metronome 1 x Charging Cable 1 x User Manual