Nice hunt:
Pros:-

• robotic gadget that you can wear on your wrist which is really comfortable for long period of time.
• it gives the real time data from your action; like punch recognition, G-force impact calculation and speed of punch.
• this gadget can analysis all your workout data like sparing, shadow boxing, mitt boxing etc.
• from these data you can put yourself in a certain category or level and find out the best way to level up yourself(off course this depend only upon you and your willingness not on any damn robot).
• it can tell you what are your week points so you can improve.
  Cons:-
• it just a gadget that only can analysis the data and assist you,
  It can't make you a world champion, it totally up to you.