1. Small and hidden, more comfortable.2. Very light, clip-on type, painless and long-term use3. The speaker is close to the ear, but not in the ear. It will help to listen to the surrounding environment at the same time, allowing you to maintain the safety of riding, running, and driving, and provide portability for business and work.4. You can freely choose to exchange your left and right ear wear, wearing glasses does not affect wearing. Compatible iOS, Android, WP system, as long as the device has Bluetooth, you can use it.5. IPX4 waterproof. Built-in high-performance lithium battery, continuous playback for 5-6 hours, continuous talk for 5-6 hours, fast charging 1-1.5 hours.6. The battery capacity is 50mah, the Bluetooth distance is about 10m, and it has functions such as integrated buttons, voice prompts, and power display.