Features 1 bluetooth 5 4 Chip Equipped with the latest bluetooth 5 4 chip ensuring a stable and efficient wireless connection for seamless audio streaming and lower power consumption 2 Superior Sound Quality Features a 12 4mm large moving coil driver delivering high fidelity sound with clear mids and trebles for an immersive listening experience 3 Deep Bass Engineered to provide rich powerful deep bass that enhances your music and gaming experience allowing every beat to be felt 4 Long lasting Battery Life Enjoy up to 12 hours of playback on a single charge for the earbuds and a total of 54 hours with the charging case making it perfect for long journeys and extended use 5 IP55 Waterproof Certified IP55 waterproof and dustproof making these earphones ideal for sports and outdoor activities ensuring longevity and reliability 6 Low Game Delay With a 47ms ultra low latency in game mode experience real time audio synchronization for a competitive edge in gaming sessions Specifications GeneralSpecificationBrandOPPOModelEnco Air4i ColorBlack WhiteWearing TypeIn earSpeaker Unit12 4mmWaterproofIP55Audio CodecAAC SBCSpeaker Sensitivity114±3dBMic Sensitivity 38dBV PaFrequency Response20Hz 20kHzbluetoothbluetooth VersionV5 4Supported ProfilesHSP HFP A2DP AVRCPTransmitting Distance10mBattery ChargingBattery Capacity58mAh Earbuds 560mAh Charging Case Work Time12h only Earbuds 54h with Charging Case Charging Time2hOther FeaturesMicrophoneYesSizeWeightProduct W