Product Name: Motorcycle Helmet Headphones Model: BT8 Answering : automatic/manual Speaker specifications: diameter 30mm, 32ohm 0.5W Response frequency: 180-2000KHZ Sound-to-noise ratio: 80dB Bluetooth version: Bluetooth5.0 Pairing name: BT11B Bluetooth distance: 10M Input : Bluetooth Charging voltage: USB 5V charging Distortion: Less than 1% Power supply mode: built-in lithium battery 1000MA Continuation time: 80 hours Product features: listening to music, answering incoming calls, voice guidance, voice calls Scope of application: Support for , , , and other smart phones, compatible with , notebook computers, desktop computers and other digital devices Product size: 230x110x37mm Colour:black Material:ABS Package Contents: 1 x Bluetooth host 1 x Charging cable 1 x Nylon Sticker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.