On 12 July 1938 a much more detailed list of specifications was given. In general they called for a tank that was to be powerfully armed, immune to standard anti-tank guns, and possessing an excellent tactical and strategic mobility. In detail they demanded a long high velocity semi-automatic 75 mm main armament; a 7.5mm machine-gun in the turret that could also serve as an AA-weapon; a machine-gun in the front of the hull or the turret; a minimal ammunition load of a hundred rounds for the gun and thirty magazines for the machine-gun; an empty weight of thirty and a combat weight of thirty-two tonnes. The engine was to be able to be both electrically and manually started, and the tracks were to be fully accessible. An on-road speed capability was required of 40 km/h maximum and 30 km/h average over a long journey, with an off-road capability of 20 km/h. Two fuel tanks were to allow a range of two hundred kilometres or eight hours off-road. The climbing capacity was to be ninety centimetres and 85% on a solid or 65% on a wet slope. The trench-crossing capacity was to be 250 centimetres and the wading capacity, 120 centimetres. For the first time, dimensional limits were included: the width was not to exceed 294 centimetres to facilitate rail transport, and the absolute height of the fighting compartment was not to exceed 120 cm, but yet be sufficient to hold a side-door.