SMAKN&reg; Waterproof Superbright 50cm White SMD Led Strip Light Lamp with USB Cable Port 5V LED strip is 0.5M ,30 pcs,3528 leds ,very bright. Driven by any devices with output 5V USB port,Such as you Computer /Desktop /laptop/Tablet/Tab/ Car Cigar lighter....... Can be used any devices with 5V USB. Also can be used by your phone charger/adpater(5V). Waterproof flexible LED strip.