This reading light is made of , which can withstand long-lasting use. Features the plastic material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color:Black -Material:Plastic -Size:20.50X4.00X0.90cm/8.06X1.57X0.35in Battery: 250mAh Light color: 5500K white light, 4500K natural light, 3000K warm light - USB port, no need for extra charging cable, just plug it into standard USB port to charge. - Fast pressing can between triple color temperature, long press for dimming. - Brightness memory function, it will return to previous brightness while you change the light color. - Wide ranges of uses, it can mount on e-reader, suspend on things or clip on table. - USB rechargeable, you can charge it with power bank, wall charger, computer, and etc. Package list: 1 x clip-on lamp