inputs.text: not great best option heart rate training - motoactv sports wrist strap practical accessory using [ [ asinb005q3144w motoactv gps fitness tracker music player ] ] review forthcoming heart rate based training also used [ [ asinb005q314fg motoactv sports armband ] ] see review found made unit less accessible using sports wrist strap makes motoactv much like using [ [ asinb000cswcqa garmin forerunner 305 ] ] see revieweven though practical option not without issues lacks somewhat comfort par forerunner find manageable others may find lack comfort deal breaker another thing less optimal using unit headphones [ [ asinb005pvxivm motorola sf200 sports headphones ] ] see review running treadmill would occasionally catch cord hand arm swing wound loosely gripping cord headphones keep issue would actually recommend using bluetooth stereo headset already one finally fastener wrist strap would preferred simple strap like would find forerunner almost polar unit works metal pushin knobs give durability concerns repeated useall things considered however still best option using motoactv heart rate based training clip arm band motoactv make unit less accessible using heart rate monitor function questions not addressed please feel free ask comment section