Try the app clockwave on iOS. It will sync your time to the atomic clock and keep perfect time. Make sure your phone volume is set to full volume. You start the app and place your watch at the top of your phone. I use this frequently and I think it costs two bucks but it works very well for me. Give it a shot, I hope this helps.
J
I haven’t thought of it. I was never able to connect to Bluetooth so I wore it less than a dozen times. No scratches but I don’t have box or papers. What would you be comfortable with?