Wow,i think it's good to be a kid again with this kind of thing.
My personal review below :

Pros :

• It will get you more active which will be a great physical activity for you
• It is just like a real world where you will experience them almost real
• It has sophisticated positional tracking technology which will make you always on the game
• The most immersive gameplay that you will experience in a mobile game
• A handheld VR which does not require headset
• Considered as Best Gaming Gear of CES 2018

Cons :

• None for this since it brings full enjoyment