[Built-in rechargeable battery wall lamp] This modern wall lamp has a built-in high-capacity rechargeable battery that fully charges in less than 4 hours, providing up to 20 hours of continuous operation in the lowest brightness mode and up to 5 hours in the highest brightness mode. When the battery is depleted, the lamp automatically turns off to protect it and extend its lifespan. This portable wireless wall lamp is equipped with a USB Type-C charging port. [Touch control for three brightness levels, three color temperatures, and on/off] This dimmable wall lamp allows you to switch between low, medium, and high brightness and turn the light on and off with a simple touch. A long press adjusts the color temperature to three levels: 2700K (warm light), 4000K (natural light), and 5700K (white light). You can adjust the brightness and color temperature as needed. This wireless LED wall lamp also remembers your last used mode and brightness for convenient future use. [Easy Installation - Two Methods] This wireless indoor wall lamp features a simplified installation design, allowing for quick installation without complicated tools: ① Nano-adhesive installation: Using high-strength adhesive technology, it adheres to the wall in just 10 seconds without damaging the surface, making it particularly suitable for renters and those renovating their living space; ② Screw installation: Provides a durable and stable solution. The bedroom wall lamp's exclusively developed anti-sagging base design completely solves the problem of the lamp head sagging. (Screws not included)