OPPO Enco Air3 Wireless Bluetooth 5.3 Semi-in-ear Call Noise Reduction Music Sports Earphones(Purple)

Features:1. Touch operation, easy and convenient2. Independent spatial sound effect, surround sound3. Bluetooth 5.3, fast and stable connection4.IP54 dustproof and waterproof5. Support simultaneous connection of dual devices6. Magnetic storage, automatic adsorption7. Small and comfortable, fit the auricle8. DNN call noise reduction, intelligent filtering of environmental noise during callsProduct parameters:1. Bluetooth version: 5.32. Effective distance: 10 meters3. Sound unit: 13.4mm moving coil unit4. Speaker sensitivity: 122-128dB@1kHz5. Frequency response range: 20Hz-20kHz6. Microphone sensitivity: -38dBV/Pa7. Noise reduction depth: 49dB8. Bluetooth codec: music: AAC/SBC, call: CVSD/MSBC9. Battery capacity: 27mAh (headphone) / 300mAh (charging box)10. Charging time: 1.2h (earphone)/2h (earphone + charging box)11. Interface: Type-C/USB-C12. Waterproof grade: IP5413. Net weight: complete set: about 37.6 grams