Features:Loudness: Robust twin bell design ensures even the deepest sleepers awaken. Capable of lasting 5 minutes, it's powerful enough for all ages and can rouse mild hearing individuals. Manual Backlight: Control your clock's light with ease. Unlike automatic backlights, our manual activation prevents sleep disruption and energy waste. Adjust brightness for a better sleep experience. Silent Analog Alarm Clock: Noiseless mechanism guarantees peace whether sleeping or waking. Enjoy uninterrupted rest and serene mornings with this silent design. Easy to use: Alarm clock offers simple operation without complexity. Perfect for those valuing efficiency and simplicity in lifestyle. Vintage Design: Retro clock adds style to any bedroom, loved by all ages for its reliability and chic look. Battery Operated: Runs on batteries for continuous functionality, ensuring reliability even during power outages. (tow AA battery not included) Basic Parameters: Name: 4.5-inch electroplated metal bell alarm clock Weight: Net weight 280g; Gross weight 315g Packing box: 16.5*12*6cm Movement: Quartz alarm clock movement Power supply method: Use two AA carbon batteries, do not use alkaline batteries Material: electroplated metal shell+private printed glass face mask+metal dial+plastic backplate Packing list:1 * alarm clock