Consistent issue with volume controls malfuntioning permanently during exercise. An unexpected continuous increasing loud beep occurs and then the volume fades immediately while still connected via bluetooth. Other controls continue to work except the volume controls. This is my fourth unit. Based on the accumulating reports of similar issues in this forum Motorola's problem resolution service model is ineffective and costly for consumers given the high price of the accessory. Will require immediate mitigation and resolution of either good faith repair or replacement and action necessary to investigate electronic issues by Motorola technical support. We will continue to petition until this can be addressed at the State and Federal level for a Class Action Lawsuit due to negligence and intentional deceitful practises to mislead the general public in product claims and lack thereof a suitable follow up plan to mitigate consumer reported issues and concerns. The retail price of this product is equal to or more to a persons one, two, or three day income. Therefore a consumer with such limited income is relying on good faith product claims and superior customer service and technical support.