Speed cubing timing is made of high-quality ABS material, which is durable. Powered by 2 “AAA” batteries (not provided), 15-20-30-60 minutes separately apply on different side of the timer. Just turn on the timer button and select the number you need and flip it up to start timing. Two level volume adjustment, the sound can be big or small. Perfect for kitchen cooking and baking, exercise, gym, classroom teaching, kids' activities and meetings.