SJCAM SJ4000 Lens Replacement with Gopro Hero Lens | DIY | Action Camera Mod - YouTube
Replacement Camera Lens 170 Degree Wide Angle Lens for Hero 1 2 3 SJ4000 CameT2 191466493045 | eBay
Vicdozia 2.5mm Replacement 170 Degree Wide Angle Camera DV Lens for Gopro HD Hero, Hero 2 3 SJCAM SJ4000 SJ5000, HS1177 Runcam Swift FPV Camera --Vicdozia