【Use Occasions】 Outdoor camping, Indoor lighting, Reading at night, Emergency lighting. | 【Plug and Play】: Plug and play, no further action required. | 【Long Service Life】: Each usb light is composed of 8 led beads with a service life of about 10,000 hours, and each bead is independent of each other. Even if individual beads are damaged, other beads can still work normally. | 【Small and Portable】：These LED lights are small and portable(3.94 inches * 0.71 inches * 0.35 inches), you can put it in your pocket or hang it on your keychain. | 【What You Get】: 4 PCS LED lights in one plastic box(which is convenient for you to organise the lights).