This is a really cool re-imagining of the Thundertiger Neptune as a WW2-era submersible torpedo fighter. The inspiration for this was the American Helldiver aircraft, complete with radial engine. 

The original Neptune that forms the foundation for this build was brand new and never used, in perfect condition, and featured numerous upgrades such as full metal control horns. We further upgraded it with a NiMh battery pack for greatly extended run times. 
 
Check out the video of this boat in operation by clicking here!
 
Comes with: 
Helldiver submarine
Graupner 40mhz radio
OEM wrench for disassembly
 
Quirks and Features: 
40mhz (Europe surface frequency) Radio is ratcheted on right side (dive planes)
OEM charge ports are not used. Charge the battery directly using XT-60 connector
Original failsafe for loss of signal or low voltage
Superb control and an insanely tight turning radius! 
Perfect for the pool!