Stretchable distance: 1620 inches
Color classification: blue
The base has a builtin standard tripod threaded interface for mounting a tripod for stable viewing.
It is infinitely variable from near to far and can be adjusted by multiples.
The 100mm large objective lens has a stronger concentrating effect and a brighter field of view.
This binocular offers an 8X magnification， see things closer and get clearer and brighter.
Magnification: about 3090 times (depending on the actual situation).