Compact Speedlite 600EX II-RT battery pack doubles continuous flashes1. The new charge control circuit reduces temperature rise during continuous flashes and operates silently. Features high-temperature charge stop circuit protection to prevent circuit damage from temperature rise. Housing made of high-quality flame-retardant material for durability
1 Comparing to Speedlite 600EX-RT, number of continuous flashes increases by 50%-100%
2 With Speedlite 600EXII-RT/ 600EX-RT, not recommended to use in the rain