Anker Soundcore Liberty 4 NC Wireless, 98.5 Noise Reduction, Adaptive Noise Cancelling to Ears

Liberty 4 nc is a stem version of space a40 (driver size increase from 10 mm to 11mm) liberty 4 is a stem version of liberty 3 pro (acaa main driver downsize from 11 to 9.2mm) the form.. We listened, and we measured, and now we have the rundown on these buds.

The liberty 4 nc have significantly better noise isolation performance and a.. Meanwhile, liberty 4 nc provides good active noise cancellation and has a similar frequency range, but the battery life is 8 hours without anc and 32 hours with the case.