Grouping: A/B/C/D/E. Flash Mode: ETTL/M/Multi/GR 4 flash modes. System mode: FSK 2. 4GHz. SYNC Mode: High Speed Sync, 1st Curtain Sync, 2nd Curtain Sync. Transmission Range: 100M. Производитель: YONGNUO. Channels: 15. Упаковка: Да. Размер модели: YN-E3-RT