Winter Knit Beanie Hats Wireless Headphone Earphone Bluetooth Music hat

Specifications Bluetooth version: 5.0+EDR Battery: 3.7v/250mah Music playback time: 10 hours Standby time: 250 hours Speaker function: 2sets*2w Hat fabric: polyester cotton + plush lining Support agreement: HFP.HSP, A2DP Functions: answer, reject, volume adjustment, music playback, pause, song switching, sound adjustment Compatible devices: mobile phones with Bluetooth, IPA, laptops, and other smart devices Advantage  

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