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Red over-ear wireless headphones, foldable design with padded ear cups and adjustable headband

Mi B15 Over-Ear Wireless Headphones Red 68H 40mm 32Ω 105dB

SKU CH-K3GE-C04GJ

Over-ear wireless headphones with 68-hour battery life, 40 mm drivers, 32 Ω impedance and 105 dB sensitivity in red

  • TypeOver the Ear
  • ColorRed
  • Driver Unit40 millimeters
  • Frequency Response5Hz-20KHz
  • THDOver Ear
  • Input Impedance32 ohms
  • 68 hours battery life keeps you listening longer
  • 40 mm drivers deliver clear sound across 5 Hz to 20 kHz range
  • Built-in microphone enables hands-free calls and online meetings
  • Foldable design and 0.44 lb weight make storage and travel easy
  • Bluetooth connection works up to 33 feet from your device

Over-Ear Wireless Headphones with 68-Hour Battery

The Mi B15 over-ear wireless headphones deliver long-lasting audio in a red finish. A 40-millimeter driver unit produces sound across a 5 Hz to 20 kHz frequency response with 32-ohm impedance and 105-decibel sensitivity. Bluetooth connectivity works up to 33 feet, and a 3.5-millimeter connector provides a wired option. The lithium-ion battery reaches full charge in two hours.

Suited for All-Day Listening and Calls

These headphones suit commuters, students, and remote workers who need a single charge to last through multiple days. Six EQ modes adjust the sound for music genres or spoken-word content. The built-in microphone handles hands-free calls and online meetings. Foldable construction and a weight of 0.44 pounds make them easy to pack. Buyers who require active noise cancellation or high-resolution codec support should consider other models.

68-Hour Operating Time Decides the Fit

The 68-hour operating time is the specification that determines whether this model matches your routine. If you regularly spend long stretches away from a charger — travel, shift work, or back-to-back study sessions — this endurance covers you. If your listening sessions are shorter and you prioritise advanced noise cancellation or premium codec features instead, a different headset will serve you better.

Highlights

  • 68 hours battery life keeps you listening longer
  • 40 mm drivers deliver clear sound across 5 Hz to 20 kHz range
  • Built-in microphone enables hands-free calls and online meetings
  • Foldable design and 0.44 lb weight make storage and travel easy
  • Bluetooth connection works up to 33 feet from your device

Specifications

BrandMi
ModelB15, MID-B15
TypeOver the Ear
ColorRed
Driver Unit40 millimeters
Frequency Response5Hz-20KHz
THDOver Ear
Input Impedance32 ohms
Signal to Noise Ratio(SNR)105 decibels
Power Supplylithium_ion, nonstandard_battery, false
Sensitivity105 decibels
Connector3.5mm
Ear Couplingover_ear
Weight0.44 pounds
Noise Cancellingsound_isolation
Wireless TypeBluetooth
Battery68 hours
Operating Time68 hours
Charge Time2 hours
Distance33 feet
Microphone Impedance~3K ohm
Microphone Frequency Response20Hz-20KHz
Microphone Signal to Noise Ratio(SNR)105 decibels
Microphone Sensitivity105 decibels
Featuressound_isolation, 5.3, 68 hours, Detachable, Volume Control, touch, Over Ear, dynamic_driver, 32 ohm, 33 feet

Questions about this item

How can I confirm the headphones are paired and playing audio after setup?

The headphones provide up to 68 hours of operating time and connect wirelessly within 33 feet; audio playback and the built-in microphone for calls indicate they are working.

What accessories are included and what must I buy separately?

The headphones include a 3.5 mm connector for wired use and a built-in lithium-ion battery charged in 2 hours; no separate cable or battery purchase is required.

Which version should I choose for the longest wireless listening time?

This model delivers 68 hours of wireless playtime with a 2-hour charge, uses 40 mm drivers at 32 ohms impedance and offers 105 dB sensitivity for extended sessions.

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