Now even faster:Recycling time up to 0.9 seconds at maximum power Maximum output of 400 watt-seconds Strong battery:500 triggers at full power Suitable for outdoor use:protected against spray water, dust and sand * Flash Modes:TTL & Manual, HSS & Freeze HS FREEZE 4S - FLEXIBLE STUDIO FLASH WITH BATTERYOur Studio flash HS Freeze 4s will give you a whole new feeling of photographing. No matter whether you want to use it in the studio or outside. This mobility comes with its strong lithium-polymer battery, with the power of which you can fire up to 500 times at full power.