Fhotoflash IFK-120 tube. Made by MELZ Factory (Moscow, Russia).
Size of the flash area (mm/inch): 5x23x30 / 0.2x0.92x1.2;
Flash energy rating (Ws): 120;
Everage power (W): 12;
Firing voltage (V): 300;
Trigger voltage (V): 180;
Flash Duration (ms): 1;
Recycle Time (sec): 10;
Impedance (ohm): 0.8