High Fidelity Audio 10mm enhanced dynamic drivers deliver rich, clean sound. MEMS microphone technology allows you to make clear calls. Stable Connection Advanced Bluetooth 5 technology provides a fast and reliable connection. USB-C Fast Recharging The case recharges rapidly via USB-C and boosts total playtime to a remarkable 30 hours on-the-go. Superb Sound and Fit Listen to crisp, high-fidelity wireless music. 3 different sizes of ear-tips for a customized fit. Voice Assistant and One Earbud Triple-tap either earbud to access your phone’s assistant. Either earbud can be used alone as a Bluetooth headset. Key Features Model: EP-T21S Colour: Black Bluetooth Version: Bluetooth 5 Charging Time: 1.5 Hours Working Time: 30 Hours Waterproof: IPX6 Charge Port: USB type C