The STIX II true wireless earphones have optimised audio drivers ENC Quad Pro microphone and Bluetooth 5.1 which delivers super low power consumption.N/AThe ENC (Electronic Noise Cancelling) Quad Pro microphone delivers superior audio quality for voice calls over the internet and with the latest Bluetooth chipset extending call/play time to up to 5 hours.N/AThe STIX II includes a pocket sized rechargeable carry case which charges the STIX II up to 5 times super-fast 45 minutes charge time built-in Smart Touch to control your music/calls and IPX5 water resistant chassis to enhance your audio experienceN/A