OPPO Enco X

Type：In-ear True Wireless

Model (earphones)：ETI51

Model (charging case)：ETI52

Driver：φ11mm dynamic driver + φ6mm balanced membrane driver

Speaker sensitivity：104dB@1Khz

Frequency response range：20Hz ~ 20kHzAudio codec：Audio codec LHDC / AAC / SBC

Noise control modes：Max Noise Cancellation /Noise Cancellation/Transparency/Noise Cancellation Off

Binaural Low-Latency Bluetooth Transmission：Supported

Bluetooth® version：Bluetooth® 5.2

Effective Bluetooth range：10m

Battery type：Rechargeable lithium-ion battery

Battery capacity：44 mAh (earphones)/535 mAh (charging case)

Music play time (50% volume)*：Strong noise cancellation mode: 4 h (single charge)/20 h (with charging case)，Noise cancellation off: 5.5 h (single charge)/25 h (with charging case)

Cable Charge Time*：80min（earphones）丨110min（charging case）

Charging port：USB Type-C

Wireless charger：Qi wireless charging supported.

Water and dust resistance - Earphone：IP54

Weight (each ear)：4.8g（±0.2g）

Weight (charging case)：42.5（±0.5g）

Weight (entire device)：52.5（±1g）

Charging case size (length * width * thickness)：66.3*49*21.7mm