Производитель: YONGNUO. 3s (AA alkaline cell used). Упаковка: Да. Размер модели: YN-600EX-RT. Model: YN-600EX-RT. Guide Number : Guide No. Flash mode: TTL M, Multi, GR. Power supply: 4xAA size batteries (Alkaline or Ni-MH are usable). Recycle time: Approx