Byikun Wireless Earbuds Bluetooth Headphones, Bluetooth 5.1 Wireless Headphones with Microphone Stereo Headset, Noise Cancelling Headphones for Sleeping, True Wireless Earbuds Sport Earbuds

? Product Description: ? ? Model name: Q31 ? ? Bluetooth version: Bluetooth V5.1 ? ? Bluetooth frequency band: 2.4GHz ? ? Speaker specification: ? 10mm16? ? ? Wind sensitivity:-42db/3db ? ? Transmission distance: ? 10m ? ? Headphone battery capacity: 30mAh ? ? Battery capacity of charging box: 300mAh ? ? Charging interface: Type C ? ? Working hours: 4-5 hours ? ? Charging voltage: DC5V ? ? Charging time: about 1 hour. ? ? Package includes: ? ? 1 x Bluetooth Earphone (L&R) ? ? 2 x pairs of ear caps ? ? 1 x Charging box ? ? 1X USB charging cable ? ? 1 x user manual