The OnePlus Buds Pro 3 in Midnight Opus feature a dual-driver acoustic system, comprising an 11mm woofer and a 6mm tweeter, engineered for a frequency response range of 10Hz-40kHz. These true wireless earbuds support LHDC 5.0, AAC, and SBC codecs, along with up to 50dB adaptive active noise cancellation, and offer Bluetooth 5.4 connectivity. The earbuds provide up to 10 hours of playback on a single charge (ANC off), extended to 43 hours with the charging case, and are rated IP55 for dust and water resistance.