This is the Hensel Porty 1200 w/s Premium Plus Battery Pack with 1200 Joule maximum power output and asymmetrical power distribution. It has a built-in radio slave receiver, to eliminate the need for a long sync cord to trigger your Porty flash head. Batteries can be exchanged within seconds with the battery drawer with quick release and handle for easy pull out. There is also an optional AC adapter which slides in and can be removed simply and quickly.
Power output is adjustable over a 6 f/stop range in 0.1 f/stop increments, easily changeable by simply tapping or holding down the arrow buttons. Batteries can be recharged with the optional multi-voltage quick charger within 2 hours. One full battery charge is good for 250 flashes at full power.
Note: When purchased on its own, the Porty 1200 Premium does not include the 5671 charger. It must be purchased separately.