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,
Graduated ND Filters 3-Pack (G-ND4 / G-ND8 / G-ND16) Compatible with DJI Osmo Pocket Gimbal Camera - Skyreat
Freewell Variable ND Filter Set for DJI Osmo Pocket FW-OP-VND
Shooting with PolarPro's six-pack ND filter set for the DJI Osmo Pocket: Digital Photography Review