Here are smart resistance bands with sensors that help you monitor your workout anywhere. Circuband iQ bands come with a custom app to show you how to do exercises and track your activity. A clever buckle system is available for you to try different attachments.
The kit weighs only a couple of pounds but can record hundreds of lb of force. The sensors are accurate and powered by replaceable batteries. Like what you see? You can get your hands on this in March.