Anker soundcore Sleep Earbuds 4 Pro: Overview
The Anker soundcore Sleep Earbuds 4 Pro track your sleep from inside your ear, then adapt calming sounds through the night and hand you a morning report.
- In-ear sleep tracking: A 100 Hz PPG sensor tracks heart rate and HRV overnight, then builds a Sleep Score and a stage breakdown of Awake, REM, Light, and Deep.
- Phone-free case: The AMOLED touchscreen case sets alarms, plays stored audio, and shows your morning report without a phone.
- BioSync adaptive audio: This experimental engine checks your PPG signal every five minutes and adjusts tempo and soundscape to your relaxation level.
- Low-profile fit: 30 dB noise cancellation and a thinner shell cut ear contact by 20 percent for side sleepers.
- Adaptive snore masking: The Smart Case detects snoring nearby and plays masking sounds so both partners rest easier.
For sleepers who want real data and less phone time before bed, the Sleep Earbuds 4 Pro cover both.
