SEIKO Metronome Watch SMW CASUAL STANDARD Collection 10 Color Reference Tone NEW
Clock accuracy: ±15 sec. per month on average. Reference tone function: Pronunciation range: 6 types (A-440Hz/A-442Hz/A-443Hz/B♭-440Hz/B♭-442Hz/B♭-443Hz) Accuracy: ±1cent. Battery life: Approx. Power source: 1 pc.