Unused after opening. "Hoshiakari" Hoshiakari LED Ceiling Light 8-10 tatami mats 38W Slim High Brightness 4600lm 12-Step Dimming & Color Adjustment Timer/Memory Function Night Light Lighting Fixture LED Light 10 tatami mats Easy Installation Integrated Fixture Applicable to Living Room/Bedroom/Study/Kitchen/Office Quoted from the product page: ⭐【Convenient Remote Control Operation】With the remote control, you can not only turn the light on and off, but also adjust the brightness and color steplessly by long-pressing the buttons. It also has a maximum brightness button and 15-minute and 30-minute timer buttons, making it extremely easy to use! ⚠️Note: The remote control may not work in night light mode. Please turn it off with the "Night Light" button before use. ⭐ 【12-Step Dimming & Color Adjustment】 Brightness can be adjusted from 10% to 100% with the remote control. The color temperature can also be freely switched from **warm white (warm color)** to daylight white (cool color). Let's create a relaxed atmosphere or focused light according to the scene and mood! ⭐ 【Easy Installation & Lightweight Design】 Lightweight design of only 0.65kg, and the adapter and main body are integrated, so no complicated assembly is required! It can be easily installed by one person. Applicable hanging ceiling: square hanging ceiling, round hanging ceiling, full hanging rosette. *It is recommended to use a stepladder during installation. ⭐ 【Product Specifications & Long Life】 Outer diameter 29cm x height 5cm, weight 0.65kg. Rated luminous flux 4600lm, power consumption 38W, ceiling light for 8 tatami mats, long-life design with a module life of 40,000 hours. Comes with a 3-year warranty, so you can enjoy comfortable lighting for a long time.