Features 1 Advanced bluetooth 5 4 Protocol Provides faster connection speeds reduced lag and exceptional signal stability for high quality wireless audio performance 2 12 4mm Mega Dynamic Driver Optimized with precision tuned diaphragm and high tension copper wire delivering bolds clear and studio like sound effects that immerse you in your favorite audio 3 Superior Codec Support AAC and SBC audio algorithms promise uncompromising sound fidelity and compatibility with a variety of devices 4 Extended Battery Performance A single charge lasts up to 54 hours with the charging case including flash charging capabilities 10 minutes charge 4 hours playback allowing extended listening without frequent charging interruptions 5 IP55 Waterproof Design Built to endure the elements the headset resists sweat dust and water splashes ensuring it thrives even in rigorous conditions 6 Lag Free Experience Enjoy ultra low latency with a response time of just 47ms empowering gamers and video enthusiasts with smooth and flawlesssynchronization Specifications GeneralSpecificationBrandOppo ModelEnco R4 ColorWhiteSpeaker12 4mmAudio CodecAAC SBCSensitivity114±3dBMicrophone Sensitivity 38dBV PaWaterproofIP55Frequency Response20 20KHzbluetoothbluetooth VersionV5 4Supported ProfilesHSP HFP A2DP AVRCPTransmitting Distance10mBattery ChargingBattery Capacity58mAh Earbuds 560mAh Charging Case Play Time12h Only Earbuds 54h with Charging Case Charging Time2hSizeWeigh