Time Timer MOD (Charcoal), 60 Minute Visual Analog Timer, Optional Alert (On/Off), No Loud Ticking; Time Management Tool 60 minute visual timer. As time expires, the red disk disappears in clockwise direction Time management tool for the classroom, office, home, and special needs No loud ticking; quiet operation! On/Off optional alert: ideal for sound-sensitive environments Best for individual or small group use 3 5/8 inches wide by 3 5/8 inches tall (including removable, silicone cover) Requires one AA battery (not included) Battery compartment is securely closed by a small screw to adhere to CPSIA standards