Abstract: A portable flasher device is disclosed in which a pair of body members are connected together to form a housing which has bi-directional planar dimensions and an axial dimension, the planar dimensions being substantially larger than the axial dimensions to give the housing a substantially greater planar extent that the axial extent, and the bi-directional dimensions being such as to define a peripheral extent of the housing to make it suitable for holding the flasher device comfortably within the average human hand. The device includes a pair of battery compartments arranged at an angle to each other to define a space therebetween, with a circuit board and other operating components arranged within the space so as to reduce the thickness of the device to a minimum. A reflector and flasher lamp are mounted within a clear housing over the circuit board. The device is provided with a means for strapping it to a user's wrist or arm, or mounting it on a standard photographic tripod.