Enco Air 3i Blue TWS Earphone Bluetooth Wireless Earbuds AI Noise Cancelling Wireless Headphone 28Hour Battery Blue

OverviewChina Version OPPO Enco Air 3i Specification parameters Product color: white/blue Sound unit: 10mm dynamic coil Speaker sensitivity: 101dB @ 1kHz Frequency response range: 20Hz~20kHz Bluetooth encoding and decoding: AAC/SBC Bluetooth version: 5.2 Bluetooth effective distance: 10m Battery type: Rechargeable lithium-ion battery Battery capacity: 40mAh (for headphones)/460mAh (for charging case) Music playback time (50% volume): 7h (one-time charging)/28h (with charging case) Call time (50% volume): 4h (one-time charging)/16h (with charging case) Charging port: USB Type-C Waterproof level - Headphones: IPX4