[2-in-1 Design]: This product uniquely combines a metronome and a BT speaker. By simply pressing the "BT" button, you can activate the BT function, pair it with your phone, and play your favorite songs as musical accompaniment, making practice more enjoyable. It can also function as a music speaker under normal circumstances, making it a versatile tool. [Classic Appearance with Advanced Features]: While maintaining the classic look of a mechanical metronome, this product offers a richer range of beat functions. It features 5 sounds: English voice counting, mechanical metronome, digital metronome, cowbell, and wooden fish. With a rhythm range of 30-252 bpm and pre- from 0-6, it has enough features to meet basic practice needs. [Large LCD Display]: The product features a large LCD display that occupies nearly half of its , allowing you to clearly see various readings on the screen. The easy-to-read large screen displays real-time data of your adjustments, making it ideal for beginners. [Adjustable Volume and Headphone Jack]: The product features a volume adjustment wheel on the side, allowing you to adjust the volume to your preference at any time. It also comes with a 3.5mm headphone jack, perfect for those who don't want to disturb others. [Versatile and Great Gift]: This metronome is suitable for various instruments such as piano, guitar, bass, ukulele, violin, drums, etc. It makes a great gift for family members and friends who love music. Speed: 30-252 per minute Beat: 0/4, 1/4, 2/4, 3/4, 4/4, 3/8, 6/8 Pre : 0-6 Timbre: Human voice, mechanical metronome sound, electronic metronome sound, cowbell sound, wooden fish sound Horn: 1.5W x 2 BT Version: 5.2 Battery: Rechargeable lithium battery (3.7V/1100mAh) Colour:B:Black Material:plastic Package Contents: 1 x Electronic Metronome Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.