I bought this for my helmet, but I never ended up using it. I only charged it, so I've opened the package once. M1-S PRO with Bluetooth connection, multi-functional with speakers and microphone. - Model: M1-S PRO - Accessories: Speakers, hard microphone, soft microphone, USB cable, user manual, Velcro, rubber, metal clip, helmet bracket - Connection type: Bluetooth - Compatibility: 2.5mm to 3.5mm adapter - Buttons: Volume adjustment buttons, power button Thank you for looking.