Referred to as 'Betty' by the Allied Forces, the Mitsubishi G4M2 was a seven-crew long-range bomber used by the Imperial Japanese Navy in World War II. Mitsubishi built 2,446 G4M (all variants) in total. The 'Betty' could reach a maximum speed of 292 mph, had a maximum range of 2,694 miles, and could weigh as much as 27,558 pounds at take-off (18,049 pounds empty). The G4M2 was armed with four 20 mm cannons, two 7.7 mm machine-guns, one 1,764 pound torpedo and 2,205 pounds worth of bombs.