Built-In 2.4GHz X Wireless Radio System Compatible with Nikon i-TTL Guide Number: 197′ at ISO 100 and 200mm Zoom Range: 20-200mm (14mm with Panel) Tilts from -7 to 90° Rotates Left & Right 180° Wireless Master/Slave TTL Functionality Recycle Time: 0.1-2.6 Seconds High-Speed, 1st & 2nd Curtain Sync Runs on Four AA Batteries
