Eonvic cables- DC 12v Male to 12 Pin Hirose Cable GH4 Power B4 2/3" Fujinon Canon Nikon Lens 1- 12v Male to Hirose 12 Pin Female Power Cable - B4 mount lenses to power video lens zoom function Source power from a 12v battery or AC to DC 12v Power Supply (DC 5.5x2.1mm connector). 12" (30cm) length Note: For B4 mount lenses with 12-Pin connector only. Not for B3 lenses. Dear Buyer, Please Recognize Eonvic original packaging. Eonvic Seller is Only a Genuine Seller. That means that you'll have the full force of the Eonvic Manufacturer Warranty to protect your purchase.