Features: Experience seamless Bluetooth-compatible connectivity and precisions rhythm control with our metronome, featuring a 0.1% beat accuracy and compatibilitys with piano, drums, violin, and more for practice. Builting with a high precisions sensor and long lasting 20 hour battery, this metronome offers tempos modes for various instruments and environment. Designed for music teachers, exam preparing students, and multi instrument households seeking professional grade rhythm training tools. Enhancing classroom lessons, rehearsal studios, or outdoor performances with its portable design and stable wireless operations within a 10 meter range. Compact ABS construction ensures durability while its Bluetooth-compatible enabled functionality simplifies tempos adjustments during intensive practice or live. Specifications: Material: ABS+Electronic Component Size: Approx. 4.80x2.87x2.28inch(122x73x58MM) Color: Black/White/Pink Package Includes: 1x Metronome 1x Instruction 1x Charging Cable note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.