Features: 1. Can pass life-level waterproof and sweat-proof tests; supports outdoor sports on cloudy and rainy days, without hindering the enthusiasm in the gym. 2. The large-capacity charging compartment is unlimited. 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, smart support and decompression, ergonomic design does not skip the outer ear or ears, three sets of earplugs large, medium and small, suitable for different ears. 4. Put down the automatic charging compartment power display. Put down the headphones to display the remaining power of the automatic charging compartment, which is clear at a glance. 5. If anyone has any questions, please contact us in time. Note: The actual color may be slightly different from the image due to different monitors and light effects. Please allow 1-3 cm deviation due to manual measurement. Transmission range: 10 meters