WHOOP 4.0 device with superknit band (blue) and battery pack (2)

Unlock your best health with WHOOP. Build better habits by tracking your sleep, recovery, stress, activity and much more. You will need to set up a membership with WHOOP in order to use the device. Comes with an extra battery pack which I used for travelling. Selling this one as I recently upgraded to a newer model. Blue band (size small) is brand new, never worn. Bought as option to black band that originally came with device. Does not come with original packaging.