The Marathon Dual Timer is able to simultaneously record two separate activities with a functional duration of 59 minutes, 59 seconds. The timer features an alarm volume setting switch for high, low, and mute. The mute setting features a flashing indicator that goes off without sound. This is the perfect timer for the hearing impaired, noisy areas, quiet areas, schools, cooking, and more. This timer can stand alone or stick to metal surfaces using the strong magnet on the back. Requires 2 AAA batteries which are included. Colors may vary.