VJ320 HiFi Bluetooth 5.0 headset, with hands-free: • Bluetooth 5.0 and stereo sound: Bluetooth 5.0 technology integrates ultra-low power consumption, better connection performance, and wider compatibility. • 40 mm dynamic speakers: VJ320 HiFi Bluetooth 5.0 headset, with hands-free: • Bluetooth 5.0 and stereo sound: Bluetooth 5.0 technology integrates ultra-low power consumption, better connection performance, and wider compatibility. • 40mm dynamic speakers: Material: Thermoplastic; Alloy: Metal; pvc;; Colour: Black; Silver