Godox Powerful Witstro AR400W Li-ion Battery Ring Flash Speedlite with LED Video Light For Camera Series: Speedlite Flash Modes: Ring flash Guide Number: 36 (m ISO 100) Wireless Triggering: Wireless control port Recycling Time: 0.05~2.8s Dimensions: 22.5*23*7cm Weight: 0.14kg Labor: 1 Year