OPPO Enco Air 4 Pro Wireless Earbud

49dB Active Noise Cancelling/Triple Mic Noise Cancelling 44 Hours Battery life (With Case) BT 5.4/AAC/SBC/IP55/LHDC5.0(Notice:LHDC 5.0 ultra-clear transmission protocol (1Mbps) compared with the traditional AAC transmission protocol (256kbps), the highest bit rate is increased by about 4 times.The LHDC transmission function requires two devices connected by Bluetooth to support the LHDC transmission protocol at the same time.OPPO and Oneplus mobile phone OS systems supported by LHDC 5.0 need to support ColorOS 13.1 and above, and are Find series, Reno series, Oneplus Digital series, and Oneplus Ace series mobile phones released by Find X6 and later. For specific support, please consult customer service for confirmation.) Audio quality Driver: φ12.4mm Dynamic Unit Driver sensitivity: 112dB @1KHz Frequency response range: 20~40KHz Microphone sensitivity: -38dBV/Pa Bluetooth Bluetooth codec: LHDC 5.0/AAC/SBC Bluetooth version: BT5.4 Bluetooth range: 10m Battery Life Battery: 58mAh(Earphone) / 440mAh (Charging Case) Battery type: Rechargeable Lithium-ion Battery Battery capacity: 43mAh (earbuds) / 440mAh (charging case) Charging port: USB Type-C Charging Time：60 min(Earphone) ;80min(Earphone+Charging Case) Music play Time(AAC+ANC OFF Default 50% Volume):ANC ON 12h /44h (With Case) Music play Time(AAC+ANC ON Default 50% Volume):ANC OFF 5.5h /20h (With Case) Music play Time(LHDC 5.0+ANC OFF Default 50% Volume):ANC ON 7.5h /28h (With Case) Music play Time(LHDC 5.0+ANC ON Default 50% Volume):ANC ON 4.5h /16h (With Case) Water and dust resistance Water resistance (earbuds): IP55 （Notice:The headphone body is suitable for IP55 dustproof and waterproof conditions, not for the charging case part. It is recommended to avoid use during strenuous exercise to prevent damage caused by sweat infiltration.The protection level of OPPO Enco Air4 Pro earphones has been tested under controlled laboratory conditions, and its standard effect has reached the IP55 level.The dust-proof and waterproof functions are not permanently effective, and the protective performance may decrease due to daily wear and tear.Do not charge the earphones in a humid state; dry the earphones in time after use with residual sweat or rain. Damage caused by immersion in liquid is not covered by the warranty.The above conditions do not apply to the headphone box part. It is recommended to avoid use during strenuous exercise to prevent damage caused by sweat infiltration.) Size Weight (earbuds): 4.4g±0.1g Weight (product): 47g±0.2g Weight (earbuds): 29.99*20.30*23.87mm Weight (product): 66.6*51.24*24.83mm What's in the box? 1*earphone 1*charging case 1* User mannual 1*Type C Cable