Bought a dirt-cheap USB desk lamp a while ago (neat little thing, for only a couple of quid from eBuyer)
The instruction manual and box description is great; box description quoted below (and it’s all sic) – classic Japlish:
The lamps are notable in below character
- Gentle ray, bright, without frequency change, benefit from preventing eyesight.
- By using lowest work voltage:5V,safety & reliability high efficiency, saving energy.
- It makes 20 times long life than normal daylight by placing exeed ages cold light tube.
- The lamp which not only can form a complete set with USB computer socket, but also can directly set with city power supply.
- Connect lampshade & lamp base in soft tube. Economic, beauty, convenience on easy handle light direction."