Here are some possible solutions:
800 watt inverter and 500 watt mwave oven combo:
http://www.amazon.com/RoadPro®-Watt-Microwave-Power-Inverter/dp/B0009Y2CN0/ref=pd_sbs_k_2
600 watt Haier mwave cube:
http://www.amazon.com/Haier-MWG7085TP-Compact-Microwave-Oven/dp/B0016HN9ZE/ref=pd_sbs_k_1
"The Wavebox" AC/DC portable microwave - no inverter needed - but unfortunately currently out of stock!
http://www.thewavebox.com/original.cfm
800 watt inverter and 500 watt mwave oven combo:
http://www.amazon.com/RoadPro®-Watt-Microwave-Power-Inverter/dp/B0009Y2CN0/ref=pd_sbs_k_2
600 watt Haier mwave cube:
http://www.amazon.com/Haier-MWG7085TP-Compact-Microwave-Oven/dp/B0016HN9ZE/ref=pd_sbs_k_1
"The Wavebox" AC/DC portable microwave - no inverter needed - but unfortunately currently out of stock!
http://www.thewavebox.com/original.cfm
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