The Extra Big & Loud timer ia a kitchen and cooking timer that features a rugged water resistant housing and variable volume control, allowing the user to set up to a maximum volume of 110 decibels – ideal in busy professional kitchens. When a count-down alarm sounds, the count-up timer starts so you will see how much time elapses after your alarm. The memory keeps your last count-down setting. The timer incorporates two magnetic pads, a flip-out stand. The unit measures 130 x 90 x 28 mm and is powered by a 9 volt PP3 battery.