Strengths: Looks good. Accurate recording of speed and distance.
Weaknesses: Bezel is far too sensitive. Sometimes beeps before your finger even makes contact. Cannot be turned off. Battery life is poor. Has locked up twice. Complex to operate. Worked it all out but forgot within a few weeks.
Overall: I have had a 101,301,305 and now this 405. Although it looks good it is my least preferred model thus far.305 was far better until it started turning itself off continually. I absolutely love the data these forerunners provide but just wish they were more reliable.4th device in 5 years.