RM-X176 Card Remote cotrol Replacement for Sony Bluetooh Audio System MEX-BT3950U Features Replacement Model:RM-X176 /RMX176 Brand: Generic Condition: Brand new No programming or setup required, easy and simple to operate. Perfect replacement for lost or broken remote control. 30 days money back guarantee & 12 months warranty from manufacturing defects. Accept return and exchange in warranty period. Note: If your model number is not listed above or your original remote is different from this remote, please email us to confirm suitability.