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GE M9 12V/5W G-4
I now have two household items that take these M9 12 volt/5 watt G4 cap halogen lights. My lovely and stylish Habitat desk lamp and a Christmas present of an upstanding lamp that is made of metal with a kind of exotic plant appearance that has five metal balls that each contain one of these lights.
The light bulbs are tiny, as the picture suggests, they are like tiny little tablets of light. To look at and handle the bulbs are quite flat with a rectanglar shape and curved edges. The bulb glass is clear and you can see the small elements inside. On the base of the bulb there is a slight bulge where the filaments are house and coming out from this bulge are two metal connector pins which are what makes the circuit. I would say that the entire bulb is only about 2 cm length by 1 cm width.
For my household items these are very easy to connect as there is nothing to undo or take apart, these bulbs simply slot into the item by placing the thin metal pins in the holes and pushing them all the way in so that there is nothing left exposed.
These bulbs are incredibly strong and bright for their size, at 5 watt because they are halogen they operate at stronger temperatures and as such produce a brighter light and colour temperature. It is very noticeable and is great as a working light in our study. The bulbs state that they have a 2000 hour lifespan. I can't say that I have recorded their hours usage in my lamps, but what I can say is that it is pretty long lasting, the one used in my study lamp has been in for over a year and hasn't given in yet, so I am happy with their performance.
I managed to pick up a pack of eight of these from Poundland, which is great value as they can cost up to £2 each! So its worth looking out for them in there.
This is a really tiny little halogen bulb which goes into the spotlights under my kitchen cupboards. Altogether I have three of these spotlights which give out a bright, clean whitish light onto my worktops which is very useful when cooking.
I do like the colour and the amount of light these bulbs give and they are a very low wattage, 5 watt and 12 volts so it is surprising they give so much light. The actual bulb is easy to pull out of its socket and push a new one in. The bulb has a two pin plug kind of socket (known as M9) and the two plugs need to be aligned horizontally to the sockets when fitting which is easy to do.
These bulbs seem very strong despite being only about 2cm in length and less than 1cm wide. Actually they remind me of the micro bug toys with their two little pin plug antenna and a small clear plastic body!
The one major fault with these bulbs is they don't seem to last that long. We have lived in this flat for just over three years and each of my three spotlights have had between 2 and 3 lightbulb changes in that time. Therefore each bulb barely lasts a year, despite me not having these lights on much, only when I am preparing food. They say they are very long life on the packet and last 2000 hours. If each bulb lasts me a year then to use 2000 hours I would have to have them on for 5.5 hours a day, which I really don't, it's probably nearer to 30 mins a day.
The bulbs aren't cheap for such a small thing, working out at about £2 each. I usually send my up husband to the local DIY store to buy them, but when I have been to get them they are difficult to find as there are so many bulbs which look very similar but are slightly different. I always take the old bulb with me to compare with the ones in the shop.
I am going to give these bulbs 3 stars, loosing two stars. They aren't long life, as they say they are on the packaging. Otherwise, the light which they give is very nice and bright without being glaring.
G-4 Lamps, Single-sided socket, Easy to change, In 6 V or 12 V Version, Very long lifeTension:12 V Rating:5 W Socket:G-4 Life:2000 h Color temperature:3000 K Color:white