Usage Tips:[Non-Ticking and Silent]The quartz movement ensures no tick-tick noise as well as clock time accuracy. Create a peaceful environment for sleep. [Luminous & Light Function]Clock dial and hands will glow a whole night after exposure to normal indoor light for a whole day or sunlight ,night light (built-in lamp) is perfect at night. [Extra Loud Ringing]smooth sweeping quartz movement. alarm sound. Super loud alarm sound for heavy sleepers and individuals who have trouble waking up. [Easy To Set] Simple On/Off switch turns on the alarm setting. Turn knobs to set the clock time and alarm time. Press button to activate the backlight in the dark. No Snooze button. Great for adults, teens, children and seniors. Specifications: Type: Retro Desk Clock Function: Alarm Movement: Smooth Sweeping Quartz Powered by: 1x AA battery (Not included) ClockInstructions: 1. Install the battery: when the alarm switch is placed in the "OFF" position, open the battery cover, press the +-polarity direction to install one "AAA" battery, and close the battery cover. 2. Adjust the time: turn the clockwise knob in the direction of the to the required time. 3. Adjust the alarm: set the alarm knob to rotate in the direction of the , set the alarm pointer to the required time, and turn on the alarm switch. Precautions: 1. Adjust the time and the alarm must not rotate in the opposite direction. 2. When the travel time becomes slower or the ringtone becomes smaller, replace the battery immediately to avoid battery leakage and damage the alarm clock. 3. The parts of this alarm clock have a precise structure, do not violently impact or vibrate, and do not place them in humid, high temperature, dusty and corrosive gas locations. 4. The quartz clock uses a 15V AA battery, and insert the battery according to the "+" and "-" poles marked on the battery box of the movement. 5. Time proofreading: Turn the hand wheel on the movement cover on the back of the clock to move the hour and minute hands to indicate the hour, minute and minute. Material:Metal+ABS colour:Black Package Contents: 1 x Alarm clock Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.