Portable battery Table lamp: Built-in 5000 mAh rechargeable battery, can be used for 8~40 hours when fully charged (also can be used while charging), has passed the safety certification. Battery Powered table lamp: Battery Operated, no need to worry about charging, Charge time 3-4 hours,Autonomy 8 to 40 hours depending on Chosen intensity.Built-in 40 LED lamp beads, let you go from dark to bright, never dazzling. Can be given as a gift to your family and friends. 3 Color Stepless Dimming: Color Temperature: Warm white light,Warm light, White light,Stepless Dimming(100%-20%); Range: 2700K-6000K; Switch the light mode by clicking, long press to control the light brightness. Aluminum Metal Desk Lamp: New fast Charge technologyRecharge 3-4h; SMD type; Watt 3. 5 W; Luminous flux: 150 lm; Volt: DC 5 V; LED Lifespan: 40,000 hours; Weight: 1.1 pounds; Material: Metal Aluminum; Dimensions 8*34cm. Minimalist Design: Portable small table lamp, Strong and lightweight aluminum material, simple outline, elegant circular design, 360 degree lighting,smooth and slender metal arms with matte shadows make it look stylish, minimalism with its warmth and unparalleled power.