Reddit mentions of PolarPro DJI Phantom 4 / Phantom 3 Filter 3-Pack

Prop Guards: There's lots of pros and cons. Frankly, I don't use them as I feel the cons far outweigh the pros. There's plenty of YouTube vids and Google hits if you want to see these reasons and then decide for yourself.

2nd battery is absolutely necessary. Who wants a 15 minute flight and then done? Especially if ever going to do real estate photography or the like. I have three and sometimes wish I had four.

Other accessories: I would absolutely buy some filters including ND for your lens is you want to get better photos and vids. THIS is a good set.

• This PolarPro set includes 3 filters, a lens guard, and gimbal guard. I have all 3 of these products and love them!. PolarPro is an excellent brand, especially when it comes to filters (which are an absolute necessity if you are shooting in sunny conditions and don't want a jello-look to your videos).
  
  
• Definitely get a propeller guard. I like SSE's because they have a quick release system. Just to note, if you have a tight-fitting case these may not work for you.
  
  
• I like having a lanyard on my remote. You probably don't need to buy a fancy one, any old lanyard lying around will work.
  
• I don't think you need a shorter cable. I just have a twist tie on one of my regular iPhone cables.