Fill your cup with greater confidence using this Audible Liquid Level Indicator. Simply place it on the side of a cup and a series of audible beeps will let you know when the liquid nears the top.
Visa, Mastercard, American Express, Diners Club and Paypal accepted.
Please note: For hygiene reasons this product is non-returnable unless faulty.
Let the metal prongs give off an intermittent beep when your cup is nearly full, followed by a faster beep when it has reached its limit. There are magnets built in to the product so you can attach it to your refrigerator!