Andoer Blackmagic Cinema Camera BMPCC 4K Power Supply Mount Plate Adapter with Spring Cable for Sony NP-F970 F750 F550 Battery Features: The battery plate is a practical power supply adapter for BMPCC 4K cameras. Specially designed for Sony with NP-F970 series battery, including NP-F970/F750/F550 batteries & etc. This battery plate adapter enables the camera to work for a long time. Built-in light indicator to show power state, green light indicates the normal working state, and red light indicates the need to replace batteries. With 1/4 inch screw on the plate, can be mount on camera bottom or shoulder rig easily; 35cm spring cable, stretched length up to 100cm. Specifications: Brand: Andoer Main Material: ABS + Metal Input Voltage: 7.4V Output Voltage: 12V Cable Length: 35cm(Stretched length: 100cm) DC Size: 5.5 * 2.1mm Package Size: 14 * 7.7 * 4.5cm / 5.5 * 3 * 1.8in Package Weight: 159g / 5.6oz Package List: 1 * Battery Mount Plate