What people love (and donât love)
What people love
- Comfortable design especially for side sleepers.
- Good battery life with up to 48 hours playtime.
- Decent sound quality and noise cancellation.
- Clear call quality and effective Bluetooth 5.4 connectivity.
- Multiple EQ modes for personalized audio experience.
- Reasonably priced for the features offered.
What people donât love
- Battery life often falls short for a full nightâs sleep.
- Charging issues with earbuds not always fitting or charging properly.
- Disruptive battery low alerts and beeps during sleep mode.
- Fit may not be comfortable for all users, especially with small ears.
- Reception and sound quality can be inconsistent for music.
- Poor instructions and difficult-to-use touchscreen controls.
Comfortable earbuds with good sound for side sleepers, but battery and charging issues limit overnight use.
Summary based on customer review evidence.
Quick facts
- Brand: ZYHKON
- Price: USD 35.99
- Rating: 4.80 (141 reviews)
If you like falling asleep to audio but hate bulky earbuds, the ZYHKON SU9 Sleep Earbuds are designed specifically for nighttime comfortâespecially for side sleepers. Each earbud is ultra-light (3.0 g per ear) with a small in-ear design thatâs meant to reduce pressure while you rest.
You can view the current price and full details on Amazon here.
One standout is the full-color LED touchscreen on the charging case. Instead of guessing with button combinations, you can quickly control playback, volume, tracks, and calls, plus adjust settings like sleep mode, language options, and screen brightness right from the case.
For sound, the SU9 uses 13mm dynamic drivers and offers five EQ modes (Standard, Classic, Jazz, Rock, Pop) so you can tailor the tone to podcasts, white noise, or music. When itâs time to sleep, Sleep Mode disables low-battery and shutdown alarms and is designed to keep voice prompts from interrupting your night.
Battery life is also geared for bedtime routines: up to 48 hours total playtime, USB-C fast charging, and a listed 1.5-hour charging time. Open the case and they connect instantly, making them convenient for travel and nightly use.
- Sleep Mode helps prevent low-battery/shutdown alarms and keeps voice prompts silent during sleep
- Ultra-light in-ear design (3.0 g per ear) aimed at pressure-free comfort for side sleepers
- Full-color LED touchscreen charging case for easy controls and customizable settings
- Bluetooth 5.4 for fast pairing and stable wireless connectivity
- Up to 48 hours total playtime, plus USB-C fast charging (1.5-hour charging time listed)
- 13mm dynamic drivers with 5 EQ modes: Standard, Classic, Jazz, Rock, Pop
Whatâs in the box: Sleep Headphones (L/R) x 2, USB-C charging cable, portable charging box, user manual.
Note: These earbuds are listed as Not Water Resistant. For uninterrupted use overnight, itâs a good idea to check battery level before bed.











