heart rate monitor chest strap replacement band for garmin wahoo polar ant+ bluetooth 4.0 5.3k monitor belt kingland essential it is an indispensable part of heart rate monitor. it will detect and send your real-time heart rate to the receiving terminal accurately. suitable for a variety of (ant+, bluetooth 4.0, 5.3 k) heart rate equipment: polar, wahoo and garmin, in addition has been tested to work with timex, and suunto transmitters utilizing the same snap attachment method. <br/> specifications <br/> space between two snap buttons: 45 mm <br/> belt length: 60-90cm / 23.6-35.4 inch. <br/> wearing size: 60-120cm/23.6-47.2 inch <br/> material: silica gel + fiber <br/> color: orange