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EARBUDSHeadphone Capacity35mAhBluetooth Version5.0Battery Capacity3.7V / 300mAhSpeaker Diameter10mmColorBlackSpeaker Power10mW * 2Sensitivity98dB ± 3dBMusic Time5 Hours (70% Volume)Frequency Response20Hz-20KHzWarranty1 MonthLenovo XT90 TWS Earphone In BangladeshBT 5.0 Brings High Data Transfer Speed, Stable Connection And Low Power Consumption. Automatically Pair After Taken Out From The Charging Case.Multi-Functional Control, Support Switch Songs, Phone Call, Volume Control And Wake Up Voice Assistant.Built-In High-Definition Microphone, Intelligent Noise Reduction, Delivers Clearer And More Real Talking Sound In Stereo Mode.40mAh Battery Single Ear Earphone, And Charged Automatically In The 300mAh Charging Case, Ensuring About 5 Hours Working Time When Fully Charged.Lightweight And Mini Size, Convenient To Carry; In-Ear Design, Fit Well To Your Ear Canal And Provide You Long Time Wearing Comfort...