Opteka i-TTL/TTL Off-Camera Flash Sync Cord for Nikon SB-400, SB-600, SB-800, SB-900, and other Speedlight Flashes (Nikon SC-28 Equivalent) Ttl Off-Camera Flash Remote Control Provides Full Ttl Control For Nikon Speedlights When Used Off-Camera With Nikon Cameras That Have Ttl Hot Flash Shoe It Allows Easy Use Of Flash When The Camera Is Mounted On A Console Compatible With Nikon Brand & Nikon Compatible Flashes Heavy-Duty Coiled Cable (Extends Up To 6.5 Feet)