1. Metal lamp is made of aluminum who has the longer use age; 2. “DIY” style which make it has the cooler surface who is more popular among fashion people; 3. USB charger could charge for you electronics and our circle has the protection method could not damage your electronics. Product dimension MM: 112*400*364 Paper Size L*W*H MM 450*210*60 Carton Size L*W*H (MM) 555*430*480 Surface material: Sandblasted Aluminum+ ABS Power: 9 W Color temperature: 4000 K Input voltage: 100-240V AC (adapter) CRI:>82 Working temperature: -20° to 60° Net weight: 800g/pc Product dimensionMM: 112*400*364 Paper Size L*W*H MM 450*210*60 Carton Size L*W*H (MM) 555*430*480