Freewell ND1000 Long-Exposure Filter for DJI Osmo FW-OP-ND1000
Amazon.com : DJI Osmo Pocket - Set of 4 ND Filters (ND4, ND8, ND16, ND32) for Camera Lens, HD Photos, Light-reducing Materials, Magnetic Design, Easy to Change, Compatible with DJI Osmo Pocket,
Amazon.com : Neewer Magnetic Lens Filter Kit Compatible with DJI Osmo Pocket Camera - 8 Pieces ND4 ND8 ND16 CPL ND8/PL ND16/PL ND32/PL ND64/PL Made of Optical Glass and Aviation Aluminum Frame :