Costnzo Efficient Noise Cancelling Sleep Earbuds (Obsidian Black)
- Scientific Sleep Aid Dual Sound Effects : Features professionally recorded white noise, including Gentle Stream Waterfall (consistent masking urban noise) and Forest Birdsong...
- Dual Noise Reduction Technology -80dB : Physical sound insulation: Passive defense, noise isolation, adopting ergonomic in ear design and high-density inert sound insulation...
- Zero-Pressure Comfort for Side Sleepers: Ultra-slim ergonomic design fits flush against the ear. Experience no ear pain whether sleeping on your back or sideโwear them all night...
Promotion availability and prices can change at any time on Amazon. Information included on this page is accurate as of 2026-09-24 at 05:42 CST.
Save 50% on the current price with promo code QGA2T4EL expires 8/8 while supplies last.