HITO 4" Silent Quartz Analog Twin Bell Alarm Clock with Nightlight and Loud Alarm (NO10) Shell material: high quality cold rolled steel. Electroplating guarantees colors keep shinning and bright. Silent, no ticking to ensure a good sleep and best working environment. Night light (built-in lamp) is perfect at night. Simply press the button when staying in bed. Super loud alarm sound for heavy sleepers. Notice: the two buttons to set time and alarm are designed that way. Please don't mistake the special design for the sign that they're broken or of poor quality.