Bluetooth 5.0 Technology& Easy Pairing Adopting the most advanced Bluetooth 5. 0 technology. TOZO T12 Support HSP, HFP, A2DP, AVRCP. Pick up two headsets from the charging case and they will pair to each other automatically, then only one step easily enter the mobile phone Bluetooth setting to pair the earbuds, which provide in-call stereo sound. Also own fast and stable transmission without tangling. Touch Control&Smart LED Digital Display Features with touch control sensors, TOZO T12 Headset can largely minimize the pressure to your ears when you touch the button for various functions. In the Wireless Charging case, the smart LED digital screen can check battery consumption display anytime. Comfortable Wearing, Premium Fidelity Stereo Sound Quality TOZO T12 wireless earbuds are designed of curved in-ear by silicone ear hooks, holding wireless Bluetooth headphones in place even during active movements. TOZO T12 Offers a Truly Natural, Authentic Sound and Powerful Bass Performance with 10mm Large Size Speaker Driver- the drive area is 2.77 times than the normal drive area. TOZO T12 Wireless Earbuds Bluetooth Headphones Premium Fidelity Sound Quality Wireless Charging Case Digital LED Intelligence Display IPX8 Waterproof Earphones Built-in Mic Headset for Sport Black