Neckband Sports Wireless Earphones Dual Ear In-Ear Neck Hanging Long Battery Life Standby K21 Bluetooth 5.3 No Lagging

Brand:Speed of Light,Transmission Range:10m,Functionality:Ultra-long battery life, call function, supports music, low latency for gaming, other features,Bluetooth Protocol:5.3,How to use:Neck Hanging Style,Is it single or double ear?:Bilateral Stereo Sound,Color:Black Bare Machine, Black Bagged "With Data Cable and Manual", Blue Bare Machine, Blue Bagged "With Data Cable and Manual", Pink Bare Machine, Pink Bagged "With Data Cable and Manual", Red Bare Machine, Red Bagged "With Data Cable and Manual",Main downstream platforms:Amazon, AliExpress, LAZADA,Main sales regions:Africa, Southeast Asia, Northeast Asia,We have authorized private labels available:yes,Is it exclusively for cross-border export supply?:yes,Customizable:Support,Is it a patented source product?:No,Mold Type:Official Model,What type of chip is it?:Zhongke Lanxun,Battery life:4-8 hours,Year/Season of Release:2025,Style:Sporty style,3C Certificate Number:2024010915610685,Waterproof performance:Waterproof for Daily Use,Material:Plastic