INVESCH 2-Pack Keychain USB LED Light Mini USB Dimmable Lamp with Touch Electrodeless Dimming Switch Keyboard Light (6-led dimming) Small and portable ,6 pieces super bright SMD5630 LED light source Double USB design, both of sides can be plug in to use Smart touch electrodeless dimming switch Warm white Color temperature 3200K Long lifespan,little heat, 5V input ,safe to use