OPPO has launched the Enco Air4s, a pair of wireless earbuds featuring active noise cancellation and IP55 water resistance. The earbuds provide up to 43 hours of total playback time when paired with the charging case. The product is currently available in China for $25.
The active noise cancellation system reduces outside sound by up to 32 dB. A transparency mode allows ambient sound through so users remain aware of their surroundings without removing the earbuds. For phone calls, 2 microphones work with AI noise reduction algorithms to filter out background audio.
The earbuds run for 8 hours on a single charge with active noise cancellation or transparency mode enabled. Turning those modes off increases playback time to 12 hours. The charging case extends total runtime to 43 hours. A 10 minute quick charge adds 4 hours of listening time, and the battery cells are rated to retain stable capacity after 1000 charging cycles.
OPPO built the Enco Air4s with an IP55 rating against dust and water ingress. Laboratory durability testing showed the charging case hinge survived 20000 open and close cycles. The earbuds and case also survived drop tests from heights of 1.8 meters and 1.5 meters respectively, alongside heat testing up to 55 °C. The launch price in China is set at $25.
