Never again worry about over-filling your beverage glass or coffee mug. Simply hang the handy Say When Liquid Level Indicator unit on the lip of your cup or glass and pour with complete assurance. Say When will sound to alert you when the liquid level nears the top. Pocket-sized, 2-5/8″ for convenience. Uses one 9-volt battery (included).
Note: Due to federal and state food, health and safety laws, this item cannot be returned once opened.