Topeak panobike hrm with chest straptopeaks panobike hrm with chest strap comes with bluetooth smart super low energy technology as standard so you can enjoy extra long monitoring of your heart rate pain free syncing to your iphone or android smartphone allows you to analyse your hearts output during cardio session on rest days or when you sleep the chest strap is so light and comfortable that youll forget youre wearing it whether youre an aspiring pro a weekend warrior or enjoy the