I found this info: Generic flash. Head: Fixed 35mm coverage. Swivel & tilt: no. Exposure modes: Auto, Varipower. Manual settings: Hi and Lo (2 steps). No built-in wireless modes. Trigger voltage: 5.3 volt. Batteries: 4xAA. Flash duration: 1/1000 sec. @ 1/1 (full output). Field upgradable: No. Dimensions: 70 x 90 x 56 mm, 210 g. Guide number (ISO 100, meter): 20. Discontinued: Yes. I read that about 5volts is already in danger zone. I got this in a package so not big deal but was thinking on trying it. Thanks!