Featuring acrisper display more powerful heart rate monitor and now fully compatible with bluetooth smart heart rate sensors the new fenix 5 series is garmin039s most advanced and inclusive sports watch to date lightweight and compact the fenix 5s is the sleeker more refined model from the new fenix 5 series designed to be more but not weigh more it has the smallest screen size at 42mm and has a lower profile design ideal for smaller wrists or active users concerned with bulkthe elevate