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Black in-ear Bluetooth 5.4 earbuds with charging case

No Sew

No Sew I13 Bluetooth 5.4 Earbuds 40H 3.8g

SKU CH-K642-HQ15W

Bluetooth 5.4 in-ear buds with 13 mm drivers, active noise cancelling and 40 hours total playtime at 3.8 g each

  • TypeIn-Ear
  • ColorBlack
  • Driver Unit13 millimeters
  • Frequency Response20000 hertz
  • THDIn Ear
  • Signal to Noise Ratio(SNR)-50 decibels
  • Bluetooth 5.4 gives faster pairing and stable range
  • 40 hours total playtime with the charging case
  • 13 mm driver delivers deep bass and clear treble
  • Active noise cancellation cuts background sound for calls
  • IP7 waterproof rating suits workouts and outdoor use

What the earbuds are and who they suit

The No Sew I13 are true wireless in-ear headphones that use Bluetooth 5.4 for fast pairing and stable playback. They weigh 3.8 grams each and come with a compact charging case that extends total listening time to 40 hours. Active noise cancellation and ENC microphones target commuters and office workers who want clearer calls without bulky over-ear designs.

Behaviour during long sessions

A single charge runs the earbuds for 8 hours before they must return to the case, which holds four additional full charges. The case recharges in one hour via USB-C, so daily all-day use is practical without hunting for wall sockets. Bluetooth 5.4 maintains connection stability during extended wear, and the IP7 rating protects the buds from heavy sweat or rain during workouts.

Installation and common friction points

Pairing is a one-step process: remove the buds from the case and select i13 on the device Bluetooth list. The earbuds support HSP, HFP, A2DP and AVRCP profiles for broad compatibility. Fit depends on the supplied silicone tips; users with very small or large ear canals may need third-party tips to seal properly and keep noise cancellation effective.

Highlights

  • Bluetooth 5.4 gives faster pairing and stable range
  • 40 hours total playtime with the charging case
  • 13 mm driver delivers deep bass and clear treble
  • Active noise cancellation cuts background sound for calls
  • IP7 waterproof rating suits workouts and outdoor use

Specifications

BrandOrdtop
Series13
ModelI13, i13, RT
Part NumberRT
TypeIn-Ear
ColorBlack
Driver Unit13 millimeters
Frequency Response20000 hertz
THDIn Ear
Signal to Noise Ratio(SNR)-50 decibels
Power Supplybattery, a, lithium_polymer, true
Sensitivity-50 decibels
ConnectorNo Jack
Ear CouplingSingle Ear
Weight3.8 grams
Noise CancellingActive
Wireless TypeBluetooth
Battery8 hours
Operating Time8 hours
Charge Time1 hours
Distance15 meters
Contains Embedded Batterybattery
Microphone Frequency Response20000 hertz
Microphone Signal to Noise Ratio(SNR)-50 decibels
Microphone Sensitivity-50 decibels
Featuresactive_noise_cancellation, 5.3, 8 hours, Without Cable, Touch Control, touch, Wireless, In Ear, dynamic_driver, 15 meters

Questions about this item

How much power does the case draw when the 40-hour battery is fully charged?

The charging case stops drawing power once both the earbuds and the case reach full charge, so idle consumption is negligible.

Does the I13 need a phone with Bluetooth 5.4 to pair?

No, the earbuds work with any device that supports Bluetooth 5.3 or earlier; they simply fall back to the highest common version.

Will the 13 mm drivers sound thin when I switch from over-ear headphones?

The larger 13 mm dynamic drivers deliver deeper bass and fuller mids than typical 6 mm buds, so the tonal balance stays rich.

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