What is the difference between Quell and Quell 2.0?

The NEW Quell 2.0 is the most advanced Quell technology ever. It is now smarter, 50% smaller, and 20% more powerful compared to the original Quell device.  Quell 2.0 is controlled by the Quell Relief app, so you can calibrate Quell to your precise needs, start and stop therapy, adjust intensity, select from a variety of personalization and automation features, and track therapy, sleep, activity and pain.

Both devices are FDA cleared to relieve chronic pain.