Appearance: high-value, stylish and streamlined design. Ultra-small mini, easy to put in the pocket, suitable for many occasions. Bluetooth has good stability, anti-electromagnetic interference, uninterrupted chain, no jam, stable use in subway, running and cycling. High-definition sound quality, strong sound resolution, clear call sound quality. Long standby time, stable charging, long battery life of 12 hours, automatic power-on and automatic connection.