These lights are sold as tablelights, but I'm not completely convinced that they look right on a dinner table. They resemble a couple of cheap plastic beakers turned upside-down, and the colours they emit are rather unsubtle in hue. The choices are red, green, blue, yellow, cyan, magenta, white, and a colour-cycle mode where the colours gently blend into each other in sequence (but migraine-sufferers note: the lights flicker slightly as they're fading between colours).
The lights have no electrical contacts, plugs or switches. They're charged by induction, by placing them on a charging base and pressing a red LED on the base. Initial charge takes 20 hours; thereafter you need to charge for 10 hours after each use. The instructions say you get between four and twelve hours of use, depending on your choice of colour (white seems to use most current). In practice, they seem to stay lit all night, although the light does get gradually less bright. Once the charging cycle has finished, the charger emits a faint but annoying high-pitched warble until you unplug it.
To select a colour, you briefly invert the lamp repeatedly. To turn it off, hold it upside down for a couple of seconds.
These lights are completely safe in use - they're splash-proof, so you can use them out-of-doors, and they stay very cool in use. They're also a lot more sturdy than their beaker-like shape implies. They could be very useful as nightlights, and very practical around an outdoor seating area (although I'd probably want more than one pack of lights for that). If your dining area is very modern and unfussy these lights might also fit in well as tablelights.