Single sided helmet speaker pad with microphone for your GATH helmet by BbTALKIN. This pad fasten to the left side of your helmet by a marine grade Velcro. Please refer to the chart above to make sure this headset is compatible with your style GATH helmet. This headset is not compatible with all GATH helmets. If you own a GATH helmet that does not work with this headset, please use standard single sided headset. This helmet pad is designed to be used with our Advance Unit. You plug the boom microphone’s 3.5mm audio cable directly into your Advance Unit to establish communication. The microphone and speaker piece on the helmet pads are completely waterproof. The design of the helmet pad allows the flexibility to change out either the microphone piece or speaker piece if it becomes damaged over time.