30 cm luminous silent wall clock, battery operated (requires 1 AA carbon battery, not included). Luminous function Wall Clock - Luminous function and glows for a long time, the numbers and clock hands are all coated with phosphor, requiring it to absorb enough light energy during the day. (The brightness of night luminescence gradually decreases and it cannot be at its brightest all the time) No Glass and Frame Design: Made of black MDF clock face 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 fashionable, 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 and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.