Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: what are their characteristics, weight, dimensions, working with electricity or gas, if that is the electric power consumption, which is the maximum c
Document: 1 Star means I hate it and I don't hate it, I'm very excited about it. However, it came out of the box not working (error code E3) so two starts it is. Perhaps there should be a Zero star mark for items that come out of the box broken. When I get this returned and replaced over the next two weeks I'll certainly chime back in.
We bought a Gene Cafe Roaster in 2007. I started roasting coffee in a skillet, then went to an electric wok, then did the popcorn popper with multiple upgrades (chaff collector, chimney, etc) before buying a Gene Cafe. It's awesome and worth the money. After 5 months it did just shut off one day. Wouldn't turn on, even after I replaced the fuse etc. One call to the seller got me another roaster in about a week.
We bought the Black Gene coffee roaster with relatively low requirements: that it work. Within two days, it bit the dust because of a voltage spike that zapped the mother board. We returned it for repairs. Two weeks later, it came back, worked for two months, and then bit the dust again, becoming a $500 paper weight. Save your money and roast coffee on the stove top like they did in the old days, or use a popcorn popper and save $450.
you've BEEN drinking every day here," I answered calmly. I have lots of requests for my coffee from the hospital employees.Back to the Gene Roaster. I usually roast outside, just to cut down on the heat, smell and smoke in the house. The latter two are minimal, and if you didn't walk in from outside you may not notice. I also stop the cooling process as soon as I can and dump the beans in a big wire mesh colander over the oven's down draft fan.
You can see the entire batch as it is roasting and with just 2 buttons, control is ridiculous easy. This is very important because different beans require different roasting times and temperatures. If you are watching the progress it is easy to see when they are ready to begin cooling and with this machine you just hit the cool button.
Works perfectly and I recently bought a 100# bag of Hawaiian green beans, so you might think I am thinking this is a reliable machine! (12-28-13)
This machine worked fine for a year and then the heating element burned out. I was going to replace it until I researched a replacement element and found this is a common problem. I refuse to spend $100 a year on maintenance for an obvious engineering error. The machine has been on the market since 2006, and they company has not addressed this problem to date. Bad business! I would not recommend this roaster unless you don't mind the maintenance fees.
This is a good product. It produces a good even roast. Only downside is that the amount of smoke it accumulates can get frustrating. Be sure to clean out the chaff collector every roast in order to get consistent roasts.
The coffee roaster is very quit and easily controllable  with both time and temperature at turn of a knob.The only thing that is an issue is pouring the beans out of the tumbler which is a pain.
The Gene Cafe coffee roaster I bought about 4 years ago has been a true workhorse. I roast probably 4 times a week, making the best coffee you can imagine for both my business ( where I have 15 employees ) and home for my wife and myself. This is an amazing amount of  throughput for a device intended for home use. Of course it's not inexpensive to get one of these but you are getting the right machine for the job.
Answer: It is electric, 120 V (regular US power outlet). It is about 18" long, 12"high, 12 wide.  It is much bigger then the small home coffee makers, but cooks 2.5 cups of beans. we get about 6-8 pots of coffee from one roast. We love ours.  weight is about 10lb.  You do have to watch it, we had one get stuck and melted part of the machine quite badly, and a second one caught on fire..(we roast on our patio- because there is a lot of smoke). The company sent us a replacement, and said they had improved it since we purchased the one that went up in flames...REALLY UP IN FLAMES!! - check out Sweet Maria, I posted photos. But we are using the third one now, and do like it a lot...we are just very careful with it!!