SEIKO SQ50 Metronome Originally priced at 4500 yen. Used for guitar practice. Functionality has been confirmed. The red light flashes in time with the set tempo, and the sound can be switched between two levels. It is also possible to mute the sound and have only the red light flash. A 9V square battery is not included. I am a non-smoker, so there is no tobacco smell, and I have no pets, so it is odorless. No claims and no returns accepted. Thank you for your consideration.