1. Bluetooth 5.0 Headphones, Over-Ear Design, Long Battery Life/No Fatigue When Worn For A Long Time 2. Intelligent Noise Reduction, Comfortable To Wear, Using Customized Bluetooth Chip, Continuous Connection Up To 15 Meters, Strong Anti-Interference And Transmission Speed Pioneer. 3. High Audio Sampling Rate For True High-Definition Calls, And Acoustic Algorithm For Voice Reduction To Effectively Reduce Ambient Sound 4. Card/Cable/Bluetooth Multi-Mode Playback, No Need To Worry About The Phone Being Out Of Power And Unable To Play Normally, Multi-Mode Selection. 5. Bluetooth 5.0 Strong Core, Stable Connection Description: 1. Frequency Pool: 2.402-2.480GHZ 2. Distance: 10m 3. Talk Time: 7 Hours 4. Speaker: φ40mm 5. Lithium Battery: 400mAh 6. Play Time: 7 Hours 7. Bluetooth Solution: Bluetooth 5.0 8. Rechargeable Lithium Battery: 3.7v/150mah 9. Speaker: 40mm 24Ω 10. Usage Time: 5 Hours 11. Functions: Foldable, Adjust Volume, Switch Songs, Answer Incoming Calls And Reject Calls, Hang Up Calls, Bluetooth Playback, Hands-Free Calls, Call , Bluetooth Reconnection, Voice Prompts, Battery Display, Pure English Broadcast, 5 Minutes Elapsed Time Connected To Automatic Shutdown Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:Blue Material:ABS Package Contents: 1 x Head-Mounted Bluetooth Headset 1 x Charging Cable 1 x Instructions In Chinese And English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.