A06 Wireless ANC Noise Canceling Headset Over Ear Bluetooth Headphone 1. Bluetooth version: V5.3 2. Bluetooth distance: 10m 3. ANC feedf back reduce: -20±2dB 4. Charging port: Micro USB 5. Battery capacity: 3.7V500mAh 6. Charging time: 2.5 hours 7. Play time(Bluetooth): 18H 8. ANC+Bluetooth: 12H 9. ANC: 60H 10. Voice support: support 11. ANC Frequency: 20Hz-500Hz 12. Bluetooth 5.3: Easy pairing and stable connection. 13. Use the included audio cable to connect the headset to your device, and you can still enjoy music even when the headset is out of power. when you plug in the audio cable, the bluetooth mode will be closed. 14. Wireless hands-free call: When the headset is turned on, let your kids keep phone contact with you, it is also an ideal learning tool for online learning. 15. Built-in 500mAh: about 3 hours of charging can support about 8-20 hours of continuous play. 16. Independent buttons: multi-button design can easily switch music, adjust volume, and freely control playpause. 17. Lightweight and comfortable: even if child wear it for a long time, they will not feel pressure. 18. Fold portable design: The headband can be folded, compact design fits perfectly in your backpack.