replacing the battery on your Marc Pro Muscle Conditioning Device
Well, it was fun while it lasted, but the battery on your Marc Pro Muscle Conditioning Device bit the dust. Now, you're left with two options: Get the Replacement Battery found here, or recover naturally. Gross. We suggest that you opt for the Replacement Battery and get back to work training your little heart out.
The Marc Pro Replacement Battery is only intended for use with the Marc Pro Muscle Conditioning Device.