Amazon.com : QKOO ND8/16/32 Filters for GoPro Hero 9 10 11 12 Black ND Filter Set Neutral Density (Directly Replace The Standard Protective Lens On Your Camera) : Electronics
TELESIN 50M Waterproof Case For GoPro Hero 9 10 Underwater Diving Housing Cover With Lens Filter for GoPro Hero 9 10 Accessories - AliExpress
Set 3 filtre ND4/ND8/ND16 Telesin Compatibile Gopro Hero 5, 6 si 7 Black