Let me see, the question is if home B/P monitors are accurate? Some are and some aren’t. LuckyGuy has it right in the positioning of your arm to achieve different readings. But let me start again, wrist monitors are really crappy and undependable; and the difference could mean whether you’re sitting or standing, or lying down, or whether you exerted yourself or not prior to taking your B/P. Also, how your arm is positioned could play a big difference in readings, too a different reading can result from having old or cheap batteries. The best way to monitor your B/P is with a manual cuff and gauge. I know that they seem a bit intimidating but they really aren’t, anyone can learn to use one. The next best one would be a desktop monitor, the cuff is still present and it inflates with a manual pump, but the reading is digital. With all that being said, your B/P is great! Most people would love to have that pressure. I’m 53 years old and my B/P runs 118/68, which is really good. I really wouldn’t sweat the B/P issue unless my symptoms grew worse and then I’d have CMP Comprehensive Metabolic Profile blood work done to check for anemia or dehydration. I’ve worked in the medical field for 14 years, believe me your pressure is perfect! If you feel lethargic do an activity to increase your heart rate and you’ll feel a lot better!