WF-1000XM4 still has good active noise reduction performance, and the battery life has been improved, when ANC active noise reduction is turned on, a single battery life can reach 8 hours, and when ANC active noise reduction is turned off, the battery life is up to 12 hours. In addition, the charging box will also provide an additional 36 hours of battery life, the total battery life is very reliable. It also supports fast charging for 5 minutes and 1 hour, and supports Qi wireless charging.
Fast charge about 2 hours, slow charge about 4 hours