The Nissin i600 Flashgun is a high powered and high output flashgun in a small and portable shell. It features TTL functionality and a guide number of 197' at ISO 100 in the 200mm position. It can provide coverage within a zoom range of 24-200mm, but can also go down to as low as 16mm with the wide-angle diffuser that is built into the device. The actual flash head can tilt upwards 90° and then rotates 180° in both left and right directions for complete 360° coverage, meaning that it can cater to a lot of different scenarios.