Sound Delivery System 4.0



Q: Is SDS 4.0 backwards compatible?

A: No. SDS 4.0 is compatible with Marvel products only.


Q: Is CeruShield TM Disk compatible with custom earpieces?

A: No. CeruShield TM Disk is only compatible with SDS 4.0 receivers. All custom earpieces still use the existing CeruStop.