The Bluetens Collection Master Pack is a handy set with the Bluetens and some accessories. That way you don't have to buy extra products to start using your TENS device. You use the device to reduce pain in your muscles and joints, but also to work on your muscle recovery after a workout or to train your muscles more effectively. The electrostimulation device has 100 treatment programs. Connect it via Bluetooth with the app and choose the program that suits you. The package includes a belt clip, an adapter including a charging cable, a storage cover and various pads. Bleutens is medically certified, which means that it has been approved by a medical committee.