Use time: All-metal rechargeable lamp sustainable lighting for 8-12 hours, depending on the brightness setting. Fully charged in 5 hours with the included USB charging station. Rechargeable table lamp built-in 40 LEDs, from natural soft light to bright mode, the working time of the light is different depending on the intensity of the light. Dimensions and weight: Includes 2 pcs all-metal built rechargeable lamp; 1*User Manual; 2*Charging cable 1.2m. Wireless lamp assembled height is 38 cm, square base length is 10.8 cm, upper head diametre is 8 cm, lower head diametre is 11.3 cm, and weight is 640 grams. If you find that the connection of the lamp head does not match, turn the direction to match. Operation instructions: Touch the touch surface on the top to turn on the rechargeable lamp. Place your finger on the touch surface and press to increase (decrease) the brightness of the light. Press and hold to continuously adjust the brightness between 10% and 100%. The light changes to 3 colours with just one press. After changing the 3 colours, press the top again to turn off the device. Function and structure: Battery operated lamp rechargeable with 3 colour temperatures: 3000K warm light, 4500K natural light, 6000K cold light. Circular 360-degree uniform lighting, soft brightness, no glare or flicker, protect your eyes, larger battery capacity, cordless design, easy to place, no tangle. No tools are required for installation, just rotate the metal pole of the lamp by hand. Waterproof and non-slip: Wireless lamp with IP54 waterproof function and cordless design, you can put rechargeable lamp in a quiet place indoors or outdoors and use it as ambient lighting. Pure metal spray paint coating lampshade and metal lamp pole, silicone non-slip base, make cordless table lamp more sturdy and stable, all-metal lamp body, more texture. Please note: The brightness settings and battery capacity of each light upon leaving the factory may vary slightly. Therefore, please adjust the brightness and colour of the light to suit your requirements. A deviation of up to 30 minutes in the illumination time is entirely normal.