Many of the features were copied from the Vickers Mark C that was purchased from Britain in 1927.
This was the second home produced tank and was Prototype No. 2. It was completed in April 1929 and after testing was called the Type 89 Light Tank. After the Type 95 Light Tank appeared it was renamed the Type 89 Medium Tank.
In 1929 the Type 89 was accepted for service and was classified as a medium tank as it weighed 10 tons.
Gun had a muzzle velocity of 1,148 ft/sec.
The engine was modified from a 100 HP Daimler 6 cylinder aircraft engine.
The steering and reduction gear was the same as the Prototype No. 1 tank.
Initially it had a front plate with a door on the right. There was a vertical front plate with a bow machine gun on the right, and the driver's visor on the left. There was a small cupola mounted on the turret.
The five return rollers were mounted on a girder.
May have been called the Type 92 Medium.
Had one long sloping front plate. The driver was on the right and the bow MG on the left.
Based on experience in the field by troops, there were changes made. The commander's cupola was changed from a small design to a larger one with a split hatch.
There were four return rollers. A ditching tail was added.
May have been called type Type 94 Medium.