Where can I buy Hammerhead One? Ajay May 28, 2017 10:10 Updated Follow We ship internationally and you can buy it from our website www.hammerhead.io We also sell&ship via Amazon in the USA. See HERE to purchase from Amazon. Related articles I was charged by Royal Mail for the delivery. Why? Why there is no user manual? Can I race Strava segments using Hammerhead One? How do live-features work? Does Karoo work everywhere? Comments 0 comments Please sign in to leave a comment.