The new SDLv3 zoom eyepiece is 100% designed and manufactured in Japan, the eyepiece features a 3x range to make it compatible with MM4 models delivering 12-36x (50), 15-45x (60) & 18-54x (77).
The SDLv3 eyepiece is smaller and lighter than the v2 but delivers a brighter, sharper picture with a wider field of view at all magnifications.
Comparison of SDL v2 and SDL v3 eyepieces:
Eye relief: 20~18mm
Body Material: Aluminium Alloy
Eyecup Type: 4 stage twist
Focal Length: 8~24mm
Eyelens Diameter: 25mm
Lens Coating: Fully multi-coated
Country of Origin: Japan