1pcs F970 only last 1-2 hours when powering 4pcs HDV-96 together, 4pcs F970 last 7-10 hours when powering 4pcs HDV-Z96 seperatly at the same time, so it"s suitable for LONG outdoor shooting!If you think 4pcs F970 is too heavy, we recommend 4pcs F550.HDV-Z96 LED Light features:Super Bright 800 LuxHDV-Z96 is a super bright (800 lux) LED with 96 individual LEDs, Pure Color Power LED bulbs,40% brighter than most On-Camera LED Panels.5600K Pure Color Power LED"sEquipped with 96 Super Bright, Pure Color Power LED"s that produces a very clean and natural color.Two Power Supply Methods:Standard(or Rechargeable)AA Batteries & Sony LF570, F770, F970 ,F550,F750 batteries.Two Magnetic Filter PlatesThe HDV-Z96 has magnetic filter plates that simply attach to the front of the LED light. Magnetic Yellow Warming filter & Magnetic White Diffusion filterHeat Free LEDThis light uses LED technology which offers heat free operation only drawing 9 watts of power.Compact DesignLess than 6" at its longest side16:9 WideThe wide 16:9 form factor allows the HDV-Z96 to produce a wider, softer light spread without creating any hot spots.Flicker Free / Dimmable 25-100%The HDV-Z96 produces a flicker free light and has a rear facing dimmer knob that can be adjusted from 25% - 100%.Shoe MountThe HDV-Z96 comes with a swivel shoe mount adapter that is perfect for mounting on any DV or DSLR camera such as Canon 5D,7D.Expandable Link SystemThe HDV-Z96 has an expandable link system where you can attach multiple units together using the included link brackets.All in all, the HDV-Z96 is more suitable for wedding shooting, small studio video-shooting and much much more!