Features: 1. i6TEX III battery-powered flash , 600Ws big power, two models recycling : fast recycling and common recycling , fast recycling time is 0.2-1s , common recycling time is 0.3-3s ; 2. 4000mAh Li-ion battery , full power flash time is 400 .Stable color temperature : 5500k±100k .Portable size , light weight only 2.29kg ; 3. It can compatible with TTL auto flash systems of multi-brand cameras . 4. Cononmark i6TEX III is built-in 2.4G wireless AE systems ,i6TEX III is compatible with Canon E-TTL , Nikon i-TTL , Sony , Fujifilm, Pentax camera systems . 5. With master and slave function , i6TEX III can connect with Cononmark TTL/HSS/Common outdoor flash ,studio flash .It can achieve one trigger control many flashes , likes a family ! 6. i6TEX III is Browns adapter , you can easy to choose many accessories .