What happens if the battery dies mid-session? Replace the 3 x AAA batteries in your Face controller, you can purchase them here. Related articles Why does the headset feel tight or uncomfortable? The symbol * appears on the screen and the controller beeps / emits an acoustic signal? Why does Slendertone Face not appear in the shop? I have reached an intensity of 99 but I would like to get a stronger contraction. What can I do? Slendertone Face Unboxing & Set Up Video Comments 0 comments Please sign in to leave a comment.