Both MIA Bumble Bee (Sub-Micro) and MIA Palm Size helis operate from lipols.

The videos were just done with a cord for the purpose of showing you can also fly with a cord

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This is MIA's trajectory with the Sub Micro Helis . All MIA Tiny helio have been designed for Lipol cells, but can be flwon with power cords while batteries charge.

2000 MIA House FLY 12" Sub-Micro heli flown in a gym with (at that time ,3 Qualcom Li Ion Cells)

The MIA House FLY redefined small helis but it was too early for technology was not quite ther as batteries were of Lithium Ion and heavier than today's Lypols, yet it flew great!. Heli Kit was light and MIA improved upon it with the Bumble Bee.

Click here for this rare cool video: http://www.micro-flight.com/videos/housefly.mpa

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2003 Bumble Bee 12" Sub Micro flown with 3 Li-Pol cells Outdoors
Flying like never seen done with a 12" micro heli, that is because there has not been a full 4 channel function 12" heli of this caliber. Most of the 12 " sub-micro heli clones, Air Hogs for instance and similar ones are toys. Check out this video, it is a must see!.

http://www.micro-flight.com/videos/Bumblebee2.wmv
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2004 Bumble Bee Version II.

This heli is the same as 2003 Bumble Bee and it flies with the same spectacular speed and power outdors using 3 Lypol cells. It also flies indoors with Lipols or with a power cord when the weather is too hot, cold, windy, rainy etc. This following video is shown with a power cord indoors, my son and I were just fooling around for fun, it was too hot outside (110 degees) for flying.

http://www.micro-flight.com/videos/MIASMV15003.wmv