We've only used it once so far, so will update review again if needed, but incredibly worth the price so far. Set PSI to the nearest .5 and it just goes until that pressure is reached then shuts off (without letting air out). The valve connector comes with multiple sizes of rubber seals to make sure it will fit your HR. It will work on our paddleboards but also our larger inflatable boat (holds over 1000 pounds). It fills up fast, and shows your remaining battery life. Works to delfate too, making it much easier to roll things up and pack again.