In this review, features, pros and cons are skipped as many other reviewers have done that already.This flash is a basic *fixed head* flash which works in either manual or sync mode. And having a guide number of 12, it will be in short range situations.The S modes:In sync mode, it is a matter to adjust the power to fill the needs. The two modes must be experimented and select appropriate power output for the situation. Limitation - close range.The M mode:A little history first... In the most primitive electronic flashes, only full power release was available. The only operational data was the guide number. Those flashes were electrically inefficient and quickly use up batteries.Then early on in the 1980's flashes came with an onboard sensor (non TTL) which will cut off once the sensor senses the flash reaching the subject. As time progressed, more and more flashes comes with TTL dedicated to specific cameras. They are more power efficient. Hot shoes and sync cables came in all different varieties. Flashes then had angle bounce and small filler front flashes. These flashes yield excellent photos.Why going back to manual? INEXPENSIVE. With this flash, we take a step back from TTL and need to figure out the optimal operation.My old school operation...Given the assumption a digital camera is used in manual mode, consider the existing lighting situation to set a predetermined ISO and depth of field (the aperture). Then select a usable sync shutter speed to work with the lighting condition. Be known that this is a short range flash, choose the power setting on the flash to get the best results. Experimental shots are required to collect operational data. With this data on hand, the flash power adjustments will be less of a guess work. Over frequent usage, this data become as familiar as the back of your hand.This flash serves great as a learning tool. Professional usage might limit to slave operations in close range. However it is a great little helper flash when one is needed in the lighting condition of the shoot.New into flash photography and don't want a learning curve? Then avoid this flash. Like to experiment, this flash is fun.