Yitee USB Light Keychain Super Bright SMD LED Mini USB Port Light Ultra-thin Portable Night Light (1-LED Double Touch Switch(4pcs)) Portable Mini Keychain USB Light Lamp with Single SMD LED & Double Touch Switch Mini USB LED Lamp Light,Color:Pure White;PCB Size: 3 x 1.1cm/1.2" x 0.43"(L*W) PCB Materials:Metal,Plastic,Electronic Parts.High Quality Laptop Keyboard/USB LED Light Reading lamp Liquid Crystal Display Backlight LED Light,Super Bright,Super Long Life,Not Hurt Eyes Package Include:4pcs Single SMD LED Mini USB LED lights.Please note that this USB light is very bright and will generate little heating after working for long time, it's normal.Just take care when you touch it off.