BT-4 Light Tank

The BT-4 was a successor to the BT-2 and BT-3. The one prototype construction was halted as the BT-5 was in favor.

Variants:
1.
Name: BT-4
Type: Light Tank
Origin: Soviet Union
Year: ~1935
Produced: 1

Length: 5.58 Meters
Width:  2.23 Meters
Height: 2.23 Meters
Weight: 11500 Kilograms
Speed: 50 km/h (70 km/h on wheels)

Crew: 3

Primary Armament*:
-7.62 mm DT (2) OR
-37 mm B-3 OR
-37 mm mod. 30 OR
-37 mm mod. 33 OR
-45 mm 20K OR
Secondary Armament:
-7.62 mm DT

Armor:
-Hull
13 mm Front
13 mm Side
10 mm Rear
10 mm Top
6 mm Bottom
-Turret
13 mm Front
13 mm Side
13 mm Rear
10 mm Top

Sources:
http://www.aviarmor.net/tww2/tanks/ussr/bt-4.htm
http://www.tanks-encyclopedia.com/ww2/soviet/soviet_BT-2.php