Monitoring blood pressure during travels can be vital, especially for those with a history of heart disease or hypertension. The new Withings Wireless Blood Pressure monitor is a compact arm cuff that works with your Bluetooth-enabled iOS or Android device to measure, display, and track systolic and diastolic blood pressure as well as heart rate - three key metrics of heart health. The monitor also comes with a USB adapter, though you must supply your own cable. Pairing with your smartphone via Bluetooth is easy once you've installed the Withings Health Mate application (free at the iTunes Store or Google Play), and set up a user ID, password, and age/gender/height/weight profile. Readings can even be displayed in graph form to track changes over time, and e-mailed to your doctor or relayed to other health databases. The blood pressure monitor runs on 4 included AAA batteries. Minimum system requirements: iOS 6 or Android 4.0. The app works with tablets but is not optimized for them.