Product name: QYS V7 Q Brand: QYS Model No. : V7Q Function: Call function Earphone material: Plastic Track: 2 Bluetooth version: 5.0 Color classification: Flagship black gold Cool Light + new 5.0 Bluetooth chip Flagship Platinum Cool light + new 5.0 Bluetooth chip flagship light coffee Cool light + new 5.0 Bluetooth chip Earphone category: True wireless earphone Water resistance: IPX5 Usage: Head-mounted Single and binaural: two sided stereo Warranty period: 3 months Connection mode between the left and right earphones: wired connection Headset and playback device connection: Bluetooth connection