Bluetooth version: 5.0Can connect two mobile phones at the same time and switch freelySupports voice assistant, short press assistant button to wake up immediatelyAutomatically answer incoming calls without manual operation, which is and protects your riding experienceIntelligent noise reduction, enjoy high-definition sound quality while listening to music and making phone callsIPX6 waterproof, waterproof and dustproof, no need to worry about Charging time: about 2 hoursBattery life: up to 18 hours(There will be differences depending on the volume)Can be connected to a handheld walkie-talkieIt is suitable for a of helmets, both soft and hard. Users can choose to install the microphone according to their own needs.Colour:blackMaterial:plasticPackage Contents:1 x Motorcycle Helmet Headset1 x USB Cable1 x English manualOnly 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.