It is a useful and portable observing tool, but generally, if you wanna observe some objects, you can't use your right and left eyes to watch at the same time, just only one eye and also you'd better take turns to see and be near from the things that you want to look.
High quality material, durable enough for your daily using.
Easy to replace batteries.
Super light weighted.
Great for collections, circuits, jewellery and watch inspection, and etc...