Ready to use in Handheld Mode,Batteries can operate up 15 hours when fully charged.
4 Operating Modes - Follow, Locked mode, Head Lock, Invert Mode
Bluetooth control and tuning via Android on both Mac and PC (Option)
Supports BMCC,Canon 5D MarkII,MarkIII,Sony A7 series (400g lens limitations), Pansonic GH3,GH4,NEX series, Lumix Series , BMPCC
the video of how to assemble it:https://www.youtube.com/watch?v=9XMxXEmcp8w