The H4 handheld can be attached to the clip provided and then slotted onto your belt or waistband. You can put this upside down in the clip as well so you can see the yardages by glancing down.
It can also be placed in your pocket and you would take it out and tag it before each shot. You could also attach this to your bag however just note you do need to manually tag your club to the H4 with each shot.
We advise wearing the H4 on the left side of you body if a right handed golfer and on the right side of your body as a left handed golfer. This means your swing downswing is less likely to interfere with the device.
If using the ProLx+ then the H4 will magnetically attach to the back of the laser. You can of course remove this if you wish.