There are 3 tiers Bragi has:
-The headphone - true wireless, 6 hr bat, noise cancel, no on board storage, no heart rate monitor, NOT waterproof, just resistant, no charge case
-The Dash - true wireless, 5 hr bat, heart rate monitor/activity tracker, waterproof to 1 meter, 4gigs on board storage, noise cancel, charge case
-Dash Pro - true wireless, 30 hr bat life, charge case, water proof 1 meter, 4 gigs on board storage, heart rate/activity tracker
I owned the Bragi headphone and they were amazing. Stellar sound quality, Great connection and got the 6 full battery life. I returned to best buy as I run in the rain and they were only water resistant, not proof. Also, on days I went to the office, gym, and ran, the battery did not last and the case would not charge. IMO the activity tracker is a gimmick, the on board storage is nice, but not useful as most people always have their phones. The Dash checks all the boxes for me and I haven't seen a cheaper price outside of black friday for $130 or $120 at Best Buy.
I purchased from best buy as reviews indicate poor quality. I did not have any issues with The Headphone in the month I had them, but it is nice to have Best Buy stand behind the product via warranty.