Where can I buy Hammerhead One? Laurence Wattrus April 13, 2017 09:17 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? Can I race Strava segments using Hammerhead One? Why there is no user manual? Does Karoo work everywhere? Can I buy Karoo at a retailer? Comments 0 comments Please sign in to leave a comment.