Website:https://www.oneplus.com/
Est. year: 2013
The main feature of the Buds 4 is the dual radiators in each earphone: an 11 mm woofer and a 6 mm high—frequency speaker, as well as two separate digital-to-analog converters (DACs), which provides high-quality sound with support for Hi-Res Audio and the LHDC 5.0 codec with a bitrate of up to 1 Mbit/s (24 bit, 192 kHz).