Improved sound and clearer calls The 7.2 mm audio unit features medium and low frequencies, thanks to numerous improvements made by acoustic experts and DSP noise cancelling technology that filters out ambient noise and ensures crystal clear sound quality Battery life of 12 hours They can be used continuously for about 4 hours after a full charge and for about 12 hours together with the charging case One button to activate multiple functions You can control music and calls with a single button, activate the voice assistant twice by pressing one of the earphones and access navigation at any time Bluetooth 5.0 High performance, more stable and faster connections The Mi True Wireless Earbuds Basic 2 earbuds are equipped with the latest Bluetooth 5.0 chip, which boasts data transmission speeds twice as fast as the previous generation, as well as more stable and faster connections Built-in button Allows users to easily control music and calls. Comfortable fit and ergonomic design, great even while doing sports. Key Features Noise elimination Volume control Suitable for mobile phone Wireless Wireless Charging Weight: 35.4g Touch control Bluetooth connection Surround Sound Replaceable Ear Tips Foam Tips Waterproof Echo Cancellation uilt-in Microphone Noise Isolation Extra Bass Call functions Push-to-talk (PTT) Built-In On/Off Switch Sweat-Proof Closed Back Charging case dimensions (W x D x H): 62 x 40 x 27.2 mm Battery life (max): 12 h Talk time: 4 h Battery recharge time (charging case): 2 h Battery capacity (charging case): 300 mAh Box contents Xiaomi Mi True Wireless Earbuds Basic 2 4 sizes silicone eartips Manual