debate for some month before buy this `` watch '' -- a inadequate name for a runner 's toolkit whether a beginner or a veteran . read complaint about slow Satellite location but for I location be prompt , 30 seconds at most , and the GPS provide very reliable metric . Watch display be easy to to see even in low light and with my hazy vision ; but it be also lightweight with a wide well-ventilated band and good water resistance if you run in the rain . Buttons -- only four ; good-size ; easy to use and well-separated on the case so you press what you mean to press . Manual 's direction work easily . still more function to try e.g. heart rate monitoring and computer tracking of run . but the watch also store history of run for awhile include time , distance , rate , calorie , date , etc. which be great . I would have love a mapping function for use while I be travel -- but that be hundred more in expense and be not in my budget . a great solution for my need -- almost perfect and very reasonable -- deliver in day from the date of order .