Yes if you want to keep the price down as much as possible, get the package with the 9 or 11" coil and the full remote control, you will get a pair of wired headphones that plug into the remote. You really should have the remote. The WS4 module can be bought at a later date for alot less than the remote. You can also wear the remote anywhere on you to help keep you free from the detector body if you like.
You can also use any earbuds you want, it uses the small 1/8" plug.
You can also use any earbuds you want, it uses the small 1/8" plug.