Features: 1. Pass the life-level waterproof and sweat-proof test; support outdoor sports on cloudy and rainy days, without hindering the enthusiasm of the gym. 2. The large-capacity charging compartment is unconstrained. While considering portability, we have increased the battery capacity of the charging compartment. 3. In-ear engineering design/in-ear style is comfortable and firm, in-ear design, clever support and decompression, ergonomic design does not jump the auricle or ears, three sets of ear caps large, medium and small, suitable for different ears. 4. Put down the auto-charging charging compartment power display. Put down the earphones to display the remaining power of the auto-charging charging compartment, which is clear at a glance. 5. If anyone has any questions, please contact us in time. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: Transmission Range: 10 meters