Classic double bell design with a sturdy hammer between allows a loud alarm to ring for 50 minutes, until you wake up and turn it off. Heavy sleepers for adults, teenagers, children will jump out of bed, never sleep. High quality quartz movement ensures no ticking noise and accurate time, providing a good working and learning environment as well as a restful night's sleep. Separate alarm switch, simple setting dials, easy to set and use. The outer case and inner reading dial have been finely crafted from metal (except the back panel for easy adjustment), which is specialized in metallic luster and shine, making the alarm clocks distinctive. They will be tempting and captivating in your bedrooms. There is a simple light access button on the back to let you easily know the time at night according to your demand, no extra glow to ruin the good environment for bedtime. The battery operated alarm clock works much longer and is less likely to run out of time than the battery operated alarm