The Nissin i600 TTL Flash for Nikon Cameras is a high-quality on-camera flash designed specifically for Nikon DSLR cameras. This versatile flash offers TTL functionality, making it easy to achieve accurate exposures every time. With a guide number of 60 at ISO 100, this flash provides ample power for a variety of lighting situations. The Nissin i600 features a compact and lightweight design, making it ideal for photographers on the go. Equipped with advanced features such as wireless TTL, high-speed sync, and a built-in diffuser, this Nissin i600 TTL Flash for Nikon Cameras is a must-have accessory for any Nikon photographer.