Power, speed, and integrated radio transmission make the VING V860IIO TTL Li-Ion Flash Kit from Godox a hard-to-beat option for your Olympus/Panasonic cameras. Fully compatible with TTL systems, the V860IIO supports many advanced functions and features. Also, it features the Godox 2.4GHz X wireless radio system which provides both master and slave TTL functionality with a range of up to 328'. On top of this, the flash is powerful and versatile, featuring a guide number of 197' at ISO 100 and 200mm along with a zoom range of 20-200mm, which can be expanded to 14mm with the use of the pull-out panel. And, this flash runs off a rechargeable Li-ion battery pack, that ensures fast recharge and long-lasting shoots.