FD-EOS Lens Mount Stepping Ring for Canon FD Lens to EOS EF Lens (Black) Filter-Battery Wire Charger The N model is a

The N model is a small and medium power connector with a threaded connection with a characteristic impedance of 50 ohms

2 above system

General Compatible with Huawei:  Y7 Pro (2019)

General Compatible with Sony:  Alpha 6600 / ILCE-6600 ( A6600)

FD-EOS Lens Mount Stepping Ring for Canon FD Lens to EOS EF Lens (Black) Filter-Battery Wire Charger The N model is a1. Applicable lenses: For Canon FD mount all lenses 2. Applicable body: Suitable for Canon EOS digital SLR camera film SLR camera 3. Features: Full manual control, manual focus, manual exposure, aperture priority, cannot focus at infinity. 4. Material: Aluminum alloy Notice: 1. Due to the design of the imaging distance behind the FD lens, the FD lens cannot be directly transferred to an EOS SLR camera for normal shooting (infinity is not in focus).