It was unusual in adopting a pusher configuration, with two engines close to the fuselage driving small propellers.

The wing of the E-210 was made in a single piece, a wooden structure built around two spars and plywood covered.

[2] The 85/95 hp (63/71 kW) Walter Minor four cylinder inverted in line engines were cantilevered from the rear spar on steel frames, with fairings both above and below the wings.

The spatted mainwheels were mounted on short cantilever struts, making only a shallow angle to the ground and with the shock absorbers inside the fuselage.

[3] On the original aircraft there was a small castorable tailwheel,[3] but later this was supplanted by a spatted, steerable nose wheel with a faired leg.

[4][5] The fixed surfaces were wooden framed and plywood covered, the tailplane attached to the top of the fuselage and braced externally from below.

[3][4][5] The date of the first flight is not known, but by the July 1937 Prague Aero Show it had been flying long enough for the directional control problem implied by the revised empennage to have been both recognised and addressed.