Runcam RC18 Wide Angle Lens 1.8mm 

Compatibility:
RunCam Swift
RunCam Swift 2
RunCam Swift Mini
RunCam Sparrow

Specs:
Focal Length (mm): 1.8
Horizontal FOV: 135°
Vertical FOV: 100°
FOV: 175°
Weight: 6.3g
Aperture(F): 2.8
Mount: M12*P0.5mm
Format(inch): 1/3"
M.O.D(m): 0.1