this be my third Garmin Forerunner . the first two , 201 and 301 be very similar to the 305 , so I really do not review any of the instruction for this device . my biggest complaint with this be that I do not feel it be make for a woman . the 305 have a watch like strap , with notch that secure the Forerunner to the wrist . I have to wear it on the second to tightest notch to keep it secure and because of the design , it dig right into my wristbone . I have now turn the Forerunner to the inside of my wrist to alleviate the pain , which have cause I to accidentially knock the `` stop '' or `` lap '' button in the middle of a run -lrb- more detail on that -rrb- . the 201 and 301 forerunner be large as well , but due to they rectangular shape and velcro strap , they never cause any discomfort to I . the button on the 305 I have mix feeling on . as for the five side button , they be just as I have have in the past , which be very difficult to push -lrb- I feel like I have to push hard to get a reaction -rrb- . the two on the face , while convenient and very easy to push , they be also a bit sensitive , so as I mention ealier , I have accidently bump these and stop or start the timer . the heart rate strap again I feel be make for a man . I have it on the most secure setting , and if it be not for the fact that it be under the band of my sport bra , I do not know that it would stay in place . I do like that it do read my heat rate immediately -lrb- the 301 would not pick up a rhr -rrb- , but the sensor MUST be very wet before you apply it to you skin , or it will never pick up a hr , even if you be sweating . the display can be adjust for what information you want to see . however , the heart rate , if not one of you setting , will appear in the top right corner at about a font size of two . good luck reading that ! the training program that the datum be download to be the same as the other Forerunners , just a bit more update . what I like be that it continue my information from the old program , but now display a `` rating for you cadence '' -lrb- walk , fast walk , slow jog , fast jog , etc. -rrb- Pretty much you can keep yor entire workout history on you pc or laptop .