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