Here's a nice vintage Walkera #38 CH-46 rc helicopter.  Twin coaxial rotors and about 2 feet long or so.  Comes with everything you see in the photos except a battery!  Battery is a 7.2V, but it was swollen and tossed.  I cut the connector off so you can see what type it is for a replacement battery.  After you get a little practice, it flies well and I installed some Airy blades on it which outperform the stock ones.  Transmitter is for the aircraft and works as it should.  I HAVE NOT flown this thing in quite some time, but it worked fine the last time I did.  These are no longer produced, but there are parts available on line.  Original manual included.