30 cm luminous silent wall clock, battery operated (requires 1 x AA carbon battery, not included). Luminous function wall clock - Luminous function and long-lasting, the numbers and hands are all coated with phosphor, requiring it to absorb enough light energy during the day. (The brightness of the night light gradually decreases and it cannot be at its brightest all the time) No glass and frame design: Made of black MDF dial and illuminated green Arabic numerals, hour and minute hands, no frames and no glass. Silent movement, accurate time, say goodbye to mechanical ticking, very suitable for home decoration, living room, bedroom, office, etc. Fine workmanship, sturdy and durable, beautiful and generous, exquisite and modern, three-dimensional numbers, clear scale display, it also shows a strong visual and artistic effect. size: 34.19 x 33.60 x 5.69 cm Material: fiberboard Color: black Package contents: 1 x Wall clock Only the above package content, other products are not included. Note: Light shooting 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 +/- 1-3 cm.