Equipped with Binaural Low-Latency Bluetooth® Transmission, means OPPO Enco W31 earphone achieve latency among the lowest in the industry thanks to its simultaneous transmission to both headphones via Bluetooth 5.0 and system-level latency reduction. Provide you with Bass Mode which could Immerse yourself in bass-heavy rhythms. Giving you Dual-Microphone Noise Cancellation during Calls feature so that your voice will be heard as clearly when meeting in person during calls, thanks to anti-wind noise chamber and noise reduction algorithm. Also the Quick pairing and automatic reconnection feature. in addition to it, it also has the Wearing Detection feature which allows the device to Automatic Play & Pause, plays when worn, pauses when removed. These headphones know what you want to do. Not forgetting the IP54 Dust and Water Resistance feature, full protection against splashing water and dust.
Model (headphones) : ETI11/ETI13 Product colors : Black/White/Pink Model (charging case) : ETI12/ETI14 Driver: 7mm dynamic driver Driver sensitivity : 95 dB @ 1kHZ Frequency response range : 20Hz ~ 20kHz Microphone sensitivity : -38 dBV/Pa Bluetooth version : BT 5.0 Wireless range : 10m Battery type : rechargeable lithium-ion battery Battery capacity : 25mAh (headphones) & 350mAh (charging case) Music play time (50% volume) : 3.5h (single charge) & 15h (with charging case) Charging time* : 2.5h (with charging case) Charging port : USB Type-C Water resistance (headphones) : IPX4 Weight (Entire device) : 50g Guarantee : 6 Months (Official)