The AA Heavy Duty Standard Battery allows patients to use most dual channel TENS units for up to 50 hours of normal use.  

Product Specifications:
•Reliable.
•Long-life.
•Up to 50 hours of use.

Size and Quantity:
•Package of 4.

size chest(in.) waist(in.) hips(in.)
XS 34-36 27-29 34.5-36.5
S 36-38 29-31 36.5-38.5
M 38-40 31-33 38.5-40.5
L 40-42 33-36 40.5-43.5
XL 42-45 36-40 43.5-47.5
XXL 45-48 40-44 47.5-51.5
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