Technical Specifications of OnePlus Buds 4

Battery Capacity:
- Earbuds: 62 mAh
- Charging Case: 530 mAh
Playback Time (AAC, 50% volume):
- Earbuds: 11 hrs
- Total (Earbuds + Case): 45 hrs
- Earbuds: 6 hrs
- Total (Earbuds + Case): 24 hrs
Playback Time (LHDC, 50% volume):
- Earbuds: 9 hrs
- Total (Earbuds + Case): 37 hrs
- Earbuds: 5.5 hrs
- Total (Earbuds + Case): 22 hrs
Talk Time (HFP, 50% volume):
- Earbuds: 6 hrs
- Total (Earbuds + Case): 24 hrs
Fast Charging (AAC, 50% volume):
- 10 mins charge → 3.5 hrs playback (Earbuds)
- 10 mins charge → 11 hrs playback (Earbuds + Case)
Full Charging Time:
- Earbuds: ~50 mins
- Earbuds + Case: ~80 mins
Charging Interface: USB Type-C

OnePlus Buds 4 55dB ANC Earbuds