For watch bands, I'd stay away from velcro. Eventually it's going to stop holding well and will have a greater chance of falling off. I like using a nylon band or metal band personally. If you want, a lot of people here like the zulu or nato style watch bands sold from countycomm. They are made to MOD or DOD specs depending which model you get. They are well liked dur to their durability and since it loops through the watch band pins, if one were to fail, it would remain on your arm. I bought the one designed after one used in a James Bond movie. Unfortunately it does not fit over my cold water wet suit. They do make an extra long one however.
There's not a significant difference between the M1 and M1 Pro other than the pro looking more like the most copied dive watch in history, the Rolex. Depending on your wrist size, you may need a different strap altoghter to fit it over a wet suit.
There's not a significant difference between the M1 and M1 Pro other than the pro looking more like the most copied dive watch in history, the Rolex. Depending on your wrist size, you may need a different strap altoghter to fit it over a wet suit.