The elinchrom rx speed as pack with s head is part of the battery flash system available in 6 different configurations a choice of 3 battery packs is available the ranger rx recycling time of 55secs and up to 140 flashes the rx speed recycling time of 3secs and up to 250 flashes and the rx speed as as the rx speed plus a fixed 21 fixed asymmetry with a super fast channel for short flash duration and fast recycling there is then a choice of 2 flash heads the s for day to day work and t