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Red and black in-ear Bluetooth 5.3 earphones with ear hooks, lightweight design

No Sew

No Sew U8I Bluetooth 5.3 In-Ear Headphones Red/Black 16 hrs

SKU CH-PYDM-EWY5S

Bluetooth 5.3 in-ear headphones with IPX7 waterproofing, cVc 6.0 microphone, 16 hours playtime and lightweight ear-hook fit

  • TypeIn-Ear
  • ColorRed/Black
  • THDIn Ear
  • Power Supplylithium_polymer, lithium_ion, true
  • ConnectorNo Jack
  • Ear CouplingSingle Ear
  • Bluetooth 5.3 enables quick pairing and stable connections
  • Dynamic drivers and CSR chips deliver high-fidelity stereo sound with rich bass
  • IPX7 waterproof rating protects against sweat and rain during workouts
  • Up to 16 hours playtime plus 250 hours standby from a 2-hour charge
  • Ergonomic ear fins with four tip sizes ensure a secure, comfortable fit

Bluetooth 5.3 sports earbuds

The No Sew U8I are wireless in-ear headphones built for active use. Bluetooth 5.3 provides stable pairing for music and calls. IPX7 waterproofing protects the internals from sweat and rain. Four ear-tip sizes and an ear fin aim to keep the fit secure during workouts.

Upgrade from older wireless buds

Moving to Bluetooth 5.3 cuts connection drops and reduces audio-video lag compared with earlier versions. The 16-hour playtime covers multiple gym sessions or a long commute without recharging. CVC 6.0 microphone processing improves call clarity in wind or traffic. Buyers who want more storage for offline tracks or a second earpiece for mono mode will not find those features here.

Limits of the Bluetooth 5.3 link

Range and bandwidth depend on the paired device and local interference. The single-ear coupling means stereo separation is delivered through one housing rather than two independent buds. Battery life is rated at 15 to 16 hours; real-world runtime falls with higher volumes or frequent microphone use. A two-hour charge restores full capacity.

Highlights

  • Bluetooth 5.3 enables quick pairing and stable connections
  • Dynamic drivers and CSR chips deliver high-fidelity stereo sound with rich bass
  • IPX7 waterproof rating protects against sweat and rain during workouts
  • Up to 16 hours playtime plus 250 hours standby from a 2-hour charge
  • Ergonomic ear fins with four tip sizes ensure a secure, comfortable fit

Specifications

BrandVRIFOZ
ModelU8I
Part NumberU8I
TypeIn-Ear
ColorRed/Black
THDIn Ear
Power Supplylithium_polymer, lithium_ion, true
ConnectorNo Jack
Ear CouplingSingle Ear
Weight0.082 kilograms
Noise Cancellingnone
Wireless TypeBluetooth
Battery15 hours
Operating Time15 hours
Charge Time2 hours
Featuresnone, 5.2, 15 hours, Detachable, Voice Control, Wireless, In Ear, dynamic_driver

Questions about this item

Does the U8I come with different ear-tip sizes so the earphones stay in place while running?

Yes, four pairs of silicone tips in XS, S, M and L are included to match the ergonomic ear-fin and give a secure fit.

How do you pair the earbuds to a phone for the first time?

Hold the multifunction button on the right earbud until the indicator flashes, then select the headset from the phone's Bluetooth 5.3 device list.

When the internal battery no longer holds a full charge, can it be swapped by the user?

No, the lithium-polymer cell is sealed inside the housing and is not user-replaceable.

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