GODOX TT600 PRODUCT HIGHLIGHT: Built-In 2.4GHz X Wireless Radio System Guide Number: 197' at ISO 100 and 200mm Zoom Range: 24-200mm (14mm with Panel) Tilts from -7 to 90° Rotates Left & Right 180° Wireless Master/Slave Functionality Recycle Time: 0.1-2.6 Seconds 3.5mm Sync Port; Wireless Control Port Runs on Four AA Batteries High-Speed Sync via Optional Transmitter