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Tiny black in-ear buds with flat profile and charging case

No Sew

No Sew In-790 Invisible Mini Sleep Earbuds Bluetooth 5.3

SKU CH-CZZ5-PRS37

Ultra-thin 0.7 g earbuds with Bluetooth 5.3, 13 mm drivers and adaptive noise cancellation deliver 4 hours playtime per charge plus 24 hours total with the LED case

  • Headphone styleIn Ear
  • Impedance32 ohms
  • Power supplyLithium ion
  • ConnectionNo Jack
  • Wearing styleSingle Ear
  • Cord lengthWireless Earbuds x 2
  • Flat-fit 0.7 g earbuds remove pressure for side sleepers
  • 13 mm drivers with adaptive noise cancellation deliver clear sound
  • Bluetooth 5.3 gives stable 10 m connection with low latency
  • 4 hours playback per charge extended to 24 hours by case
  • IPX4 rating resists sweat, rain and dust during daily use

Ultra-Thin Fit for Side Sleepers

The In-790 earbuds weigh 0.7 grams each and sit flat inside the ear canal so nothing presses against the pillow. Bluetooth 5.3 keeps the link stable while you move during the night. They are built for people who find regular buds painful after an hour. Buyers who need active noise cancellation for travel or a transparency mode for awareness should look elsewhere.

Steady Output Through the Night

A single charge runs for 4 hours and the case holds enough power for 24 hours total, so the buds keep playing white noise or podcasts until morning. Adaptive noise cancellation reduces steady background hum without draining the cell faster. The 13 mm dynamic drivers hold consistent bass and mid levels at low volumes. Listeners who want high-SPL music sessions or critical monitoring will not get the headroom they need.

IPX4 Shell and Touch Controls

The IPX4 rating shrugs off sweat, rain and a quick rinse, making the buds practical for early-morning runs as well as bedtime. Type-C charging refills the case in about 1 hour and the LED display shows remaining capacity at a glance. Touch surfaces handle play, pause and calls without a physical button to dig into the ear. Users who prefer a wired fallback or a larger charging case with extra capacity will not find those options here.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 70% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameIon
Model nameIn-790
Part numberIn-790
Product typeIn-Ear
Product colorBlack
Performance
Supported distance10 m
Audio & video
Headphone styleIn Ear
Impedance32 ohms
Wearing styleSingle Ear
Noise cancellationAdaptive noise cancellation
Mic impedance~3K ohm
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Power supplyLithium ion
Battery pack4 h
Run time4 h
Charging time1 h
Size & build
Cord lengthWireless Earbuds x 2
Product weight0.7 g
In the box
In the boxCable, User Manual, Wireless Earbuds x 2, Wireless Charging Case x 1

Questions about this item

Do the 13 mm drivers produce noticeable warmth during an all-night session?

Each bud weighs 0.7 g and draws little power, so heat buildup is minimal even after several hours of continuous use.

What charging port must my power source provide for the case?

The case charges via USB Type-C, so a Type-C cable and a standard 5 V USB supply are required.

Will Bluetooth 5.3 maintain a stable link if my laptop only has an older Bluetooth adapter?

Bluetooth 5.3 is backward compatible, so the earbuds will connect to older adapters, though range and latency may be reduced.

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