Bluetooth communication system SRL2 for SHOEI helmets, with microphone and speakers. This is a used item, so please ask any questions you may have. I don't want to be accused of intentionally hiding anything after the purchase. - Model: SRL2 - Brand: SENA - Included: Microphone (unused), speakers, instruction manual, connection cable - Compatibility: For SHOEI helmets - Function: Bluetooth communication system - Condition: Works without any problems. (Used until October 2025) Thank you for looking.