Never again worry about over-filling your beverage glass or coffee mug. Simply hang the handy EZ Fill Liquid Pouring Aid indicator on the lip of your cup, glass, mug, or container and pour with complete assurance. The buzzer will gently sound, alerting the user to stop pouring when the liquid is about 1 inch from the top.
Uses 3 9V batteries (included). Measures 2 1/2" x 1 1/4".