An ideal gadget to track reading time-a requirement in schools across the country. Set the timer to count down and sound an alarm when the time is up, or count up and use the cumulative timer, up to 100 hours. Also good for timing math facts, music practice and study or exercise sessions. Made of durable polyethylene plastic. Takes 1 watch size battery (included). 7 3/4"H X 1 3/4"W. Specify color: Blue, Green or Purple.