The best replacement for 405 is 405cx.

The best alternatives to 405 are rated as following:
★★★★★  405cx
★★★★  410
★★★★  406
★★★★  305
★★  110
★★  210
★★  405cx garmin
★  fx5
★  310xt
★  garmin 405cx
★  404
★  445
  5 traffic
  403
  rena xp3
  suunto x10
  303
  444
  406 fluval
  nike gps watch

Your alternative for 405 is not listed? Suggest!
Speaking about 405, one probably shouldn't forget about foot pod.

Other search terms related to 405 and their ratings are:
★★★★★ foot pod
footpod
You have in mind a companion for 405 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 405 in all years. Click on graph for more.
405
405cx
410