Take your photography to the next level with this professional-grade wired remote shutter release cable. Compatible with multiple Nkon models, including Z8, Z9, D850, D810, D810A, D800, D800E, D700, D500, D300, D1, D2, D2X, D3, D3X, D4, D4X, and D5. 1) Supported Functions: Photo, Focus, Video (requires camera parameter settings) 2) Compatible Models: Nkon D850, D810, D800E, D800, Z8, Z9 3) Video functionality requires configuration on select Nkon cameras. Procedure: Access camera menu → “Shutter Release Settings” → Select REC mode to control video recording 4) Battery-free operation; powered by camera 5) No BULE lock function; continuous press required for burst/BULE mode 6) Remote button replaces camera shutter button 7) Cable length: 150cm / 30g 8) Setting camera video recording function: Slide the “LV” switch at the camera's bottom-right corner to the video symbol. Enter MENU → ‘Custom Settings Menu' → f Control → Select “Camera” icon → Shutter Release Button → Video Recording. (MENU → Point → Custom → Animation → Assign Shutter Release Button → Video Recording) 9) Camera shutter interface is located on the same side as the lens, featuring an 11-pin large circular port Specifications: 1) Product dimensions: Approx. 4cm × 2cm × 1cm 2) Battery-free operation; powered by camera's power source 3) Functionally equivalent to the camera body's shutter button 4) Features electronic buttons with distinct tactile feedback