Shell Versions

 

V1: What to look for

Front

  • Blue Circuit Board
  • Removable Reset button

Back

  • Lightbar Screwed in
  • Take note of circuit board shape

 

V2: What to look for

Front

  • Green Circuit board.  No blue edges 
  • Integrated reset button

Back

  • No more lightbar screws
  • Note the taller circuit board shape

V3: What to look for

Front

  • Green Circuit board.  Blue ribbons on side 
  • Slimmer battery trey with more pronounced edges

Back

  • Much slimmer circuit board