<p>1. Bluetooth 5.0 chip transmission, faster and more stable. </p> <p>2. Professional sound adjustment, high sound quality and fidelity. </p> <p>3. Touch control for easier operation. </p> <p>4. The headphones can be used individually or in combination with two, and the two have 4D HiFi subwoofer effects when used together. </p> <p>5. Automatic connection is very convenient. </p> <p>6. The battery capacity is large and it can last for a long time. </p> <p>7. Compatible, compatible with 99% of Bluetooth-enabled devices. </p> <p>8. You can carry and use it anytime, anywhere. </p> <p> </p> <p>Product parameters: </p> <p>1. Bluetooth version: V5.0. </p> <p>2. Transmission distance: 10m. </p> <p>3. Single headphone battery capacity: 30mAh. </p> <p>4. Talk time (when the headset is used for one time): 4-5 hours. </p> <p>5. Music time (when the headset is used once): 4-5 hours. </p> <p>6. Charging time: 30-60 minutes. </p> <p>7. Standby time: 100 hours. </p> <p>8. Audio transmission format: HFP 1.7HSP 1.2A2DP 1.3AVRCP 1.6SPP 1.2PBAP 1.0. </p> <p>9. Output: DC 5V. </p> <p>10. Frequency: 20-20000Hz. </p> <p>11. Size of the charging box: 68x45x21mm. </p> <p>12. Single earphone size: 42x17mm.</p> <p></p> <p></p>