Berlin Acoustic 2025 sleep Bluetooth earbuds — wireless noise reduction, ultra-long battery, ultra-slim low-profile design, comfortable fit

Berlin Sleepbuds – Non-In-Ear True Wireless Earphones

Ultra-compact sleep-focused earbuds that rest in the outer ear (non-in-ear) for pressure-free comfort while side-sleeping. A lightweight, ear-conforming shape stays securely in place, and the charging case shows remaining power on a clear LED display. Bluetooth 5.3 provides a stable link for bedtime audio, podcasts, and calm tracks.

Features Description

• Pressure-free, non-in-ear fit: rests in the concha instead of the ear canal to reduce pressure and long-wear discomfort—friendly for side sleepers.
• Ear-hugging mini design: biomimetic curves and an anti-drop geometry help the buds sit flush and stay put through nightly movement.
• Directional “DT4.0” sound delivery: adjusts the outgoing sound beam by about ±25° relative to ear shape to help guide audio efficiently toward the ear canal.
• Clear, lively tuning: engineered acoustic chamber with digital enhancement for balanced, immersive listening at low to moderate volume.
• Low-latency mode for A/V sync: improves audio-video alignment for casual gaming and streaming before sleep.
• Stable wireless: dual-core Bluetooth 5.3 connection designed for consistent performance around the room.
• LED battery readout: case display shows both earbuds’ and case power at a glance.
• Lightweight and portable: compact case and feather-light earbuds for easy daily carry.

Specification

• Type: True-wireless, non-in-ear sleep earbuds
• Bluetooth version: 5.3
• Wireless range: up to ~10 m (open space)
• Single-charge listening: up to ~6 hours (typical, varies by volume and content)
• Total battery life with case: up to ~58 hours (typical)
• Case capacity: 400 mAh
• Charging time: about 1.5 hours (case)
• Charging port: USB-C
• Fit: non-in-ear, ear-conforming shell with anti-drop geometry
• Display: numeric LED power indicator on charging case

What’s in the Box

• Sleepbuds (pair)
• Charging case with LED display
• USB-C charging cable
• User guide

Notes

• Battery time figures are from controlled tests and will vary with volume, content type, and environment.
• For the most secure hold, place the bud so it rests naturally in the concha and rotate slightly until it feels stable.