358462 meideal M50 beat temp metronome. For professional use or beginners. Features: 1. This M50 is a professional beat temp metronome. 2. It is a multifunctinal metronome， easy to operate. 3. With the function to measure the temp speed: tap function to let you know the exact temp speed. 4. With dual channel for earphone output. 5. With the design of clip and strap hole in the back， it can be clipped in the collar or hung in the neck. Temp mode: Speed: 30 - 280 bpm Beat: 0 - 9 Accuracy: + 0.001 Power supply: 1 x CR2032 button battery (Not included) 1 x Metronome 1 x User manual In original package