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White in-ear Bluetooth earbuds with ear hooks, charging case showing LED display

No Sew

No Sew BX31 Bluetooth 5.3 Earbuds White 75Hrs

SKU CH-4SXY-QPZ0H

True wireless in-ear headphones with Bluetooth 5.3, active noise cancellation, IPX7 waterproofing and 75 hours total playtime

  • Headphone styleIn Ear
  • Power supplyBattery, true
  • ConnectionNo Jack
  • Wearing styleSingle Ear
  • Noise cancellationActive
  • Wireless technologyBluetooth
  • Bluetooth 5.3 delivers 3× faster, stable connections up to 10 m
  • 13 mm dynamic driver produces powerful bass, clear mids and treble
  • ENC noise-cancelling mic isolates voice from background for crisp calls
  • IPX7 nano-coating protects earbuds from sweat and rain during workouts
  • 75-hour total playtime with case and 1.5-hour recharge keeps you listening longer

True wireless earbuds with 75-hour case

The No Sew BX31 are true wireless in-ear headphones that connect over Bluetooth 5.3. A charging case extends total listening time to 75 hours and shows remaining power on an LED display. They are built for anyone who wants cable-free audio during workouts, commutes or long work days without hunting for a socket.

Upgrade from older Bluetooth buds or wired sets

If your current earphones drop out, need frequent recharging or tether you to a device, the BX31 removes those friction points. Bluetooth 5.3 cuts latency and stabilises the link up to 10 metres, while the case delivers multiple full charges so you can leave the cable at home for days. The jump is worth it when reliability and multi-day stamina matter more than a single-charge figure.

Check fit, device support and charging habits

Verify that in-ear tips and the flexible TPE ear hooks feel secure for your ear shape — three tip sizes are supplied to help. Confirm your phone, tablet or laptop runs Bluetooth 5.3 or an earlier compatible version. Remember each bud runs about 8 hours per charge and the case needs roughly 1.5 hours to refill, so plan top-ups around your longest sessions.

How it compares

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

Price $31.99
Pricier than about 57% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameSajawass
Model nameBX31
Product typeIn-Ear
Product colorWhite
Performance
Supported distance10 m
Audio & video
Headphone styleIn Ear
Wearing styleSingle Ear
Noise cancellationActive
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Power supplyBattery, true
Battery pack8 h
Run time8 h
Charging time1.5 h
Built-in batteryBattery

Questions about this item

What ear-tip sizes come with the BX31 to seal the 13 mm drivers?

Three tip sizes are included so you can choose the fit that seals the 13 mm drivers securely.

How do I pair the earbuds using Bluetooth 5.3, and what step is often missed?

Open the case to enter pairing mode automatically, then select the earbuds on your device; the step often missed is ensuring the case lid stays open until the connection confirms.

Which user-replaceable parts will need attention after extended use?

The silicone ear tips are the only user-replaceable parts; the built-in batteries are not serviceable.

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