The Westcott Strobelite Plus is a monolight that produces 400 effective watt/seconds. It is lightweight, inexpensive, and includes a modeling light for ease of composition. It includes a reflector and mini to PC sync cord.
Built-in optical slave "sees" the light fired from other strobes, fires the unit instantly.
This feature may be switched off.
Saves you from firing the strobe to discharge energy when switching to a lower power setting
Polycarbonate housing -- weighs less than 3.5 lbs (1.6kg).