Brand	: Oneplus
Model No	: E513A
Battery Capacity	: Earbuds 62mAh, Charging Case 530mAh
ANC Status	: 55dB Adaptive ANC
Waterproof Level / Grade	: IP55 Water
Microphone	: 3-Mic AI Call Noise Cancellation
Driver	: 11mm + 6mm

Technical Specifications of OnePlus Buds 4

Dimensions & Weight

• Earbuds: 31 × 20.6 × 24.2 mm

• Charging Case: 65.4 × 52.4 × 25.3 mm

• Weight:

• Earbuds: 4.73 ± 0.2 g

• Charging Case: 39.57 ± 1 g

• Total: 49.02 ± 1 g

Audio Features

• Drivers: 11mm woofer + 6mm tweeter (dual drivers)
• Frequency Response: 15Hz – 40KHz
• Driver Sensitivity: 118 ± 1.3dB @1mW
• Microphone Sensitivity: -38 ± 1dB
• Microphones: 3 mics per earbud

• Impedance:

  • 18Ω ± 15% (Woofer)
  • 10Ω ± 15% (Tweeter)

• Sound Pressure Level (SPL): 96.5dB

• Rated Power: 10mW

Noise Cancellation

• Type: Real-Time Adaptive Active Noise Cancellation (ANC)
• Noise Reduction Depth: Up to 55dB
• Noise Reduction Frequency Range: Up to 5,500Hz
• Noise Control Modes:
  • ANC On
  • Adaptive Mode
  • Transparency Mode
  • ANC Off

• 3-Mic AI Call Noise Cancellation

Connectivity

• Bluetooth Version: Bluetooth® 5.4 (Steady Connect)
• Bluetooth Codecs: LHDC 5.0, AAC, SBC
• Effective Range: Up to 10m
• Bluetooth Profiles: HFP/A2DP/AVRCP
• Google Fast Pair Support
• Dual-Device Connection

Battery & Charging

• Battery Capacity:

  • Earbuds: 62 mAh

  • Charging Case: 530 mAh

• Playback Time (AAC, 50% volume):

  • Earbuds: 11 hrs

  • Total (Earbuds + Case): 45 hrs

  • Earbuds: 6 hrs

  • Total (Earbuds + Case): 24 hrs

• Playback Time (LHDC, 50% volume):

  • Earbuds: 9 hrs

  • Total (Earbuds + Case): 37 hrs

  • Earbuds: 5.5 hrs

  • Total (Earbuds + Case): 22 hrs

• Talk Time (HFP, 50% volume):

  • Earbuds: 6 hrs

  • Total (Earbuds + Case): 24 hrs

• Fast Charging (AAC, 50% volume):

  • 10 mins charge → 3.5 hrs playback (Earbuds)

  • 10 mins charge → 11 hrs playback (Earbuds + Case)

• Full Charging Time:

  • Earbuds: ~50 mins

  • Earbuds + Case: ~80 mins

• Charging Interface: USB Type-C

Special Features

• OnePlus 3D Audio
• Sound Master EQ & Golden Sound
• 47ms Low Latency Mode
• AI Translation
• Voice Assistant Shortcut
• Find My Earbuds
• Double-Tap for Camera Control
• HeyMelody App Compatibility
• OTA Updates
• IP55 Dust & Water Resistance

Included Accessories

• OnePlus Buds 4 × 1 pair
• Charging Case × 1
• Type-C Charging Cable × 1
• Ear Tips (S, M, L; M pre-installed)
• User Manual & Safety/Warranty Guide

OnePlus Buds 4 – Frequently Asked Questions (FAQs)

1. Does OnePlus Buds 4 have Active Noise Cancellation (ANC)?

Yes, the Buds 4 feature Real-Time Adaptive ANC with up to 55dB noise reduction, effectively blocking low-frequency sounds like traffic and airplane noise.

2. How is the sound quality of OnePlus Buds 4?

They have dual drivers (11mm woofer + 6mm tweeter) for balanced audio with deep bass and clear highs, supporting LHDC 5.0 for high-resolution sound.

3. What is the battery life of OnePlus Buds 4?

• ANC Off: Up to 11 hours (earbuds), 45 hours (with case)

• ANC On: Up to 6 hours (earbuds), 24 hours (with case)

• Fast Charging: 10 mins = 3.5 hours playback

4. Does OnePlus Buds 4 support wireless charging?

No, they charge via USB Type-C but lack wireless charging.

5. Is OnePlus Buds 4 waterproof?

They have an IP55 rating, making them sweat and dust-resistant but not fully waterproof.

6. Does it support multi-device pairing?

Yes, the Buds 4 support dual-device connection, allowing you to switch between two devices seamlessly.

7. How is the call quality on OnePlus Buds 4?

They feature 3-mic AI noise cancellation for clear voice calls even in noisy environments.

8. Does it have low latency for gaming?

Yes, the 47ms low-latency mode ensures smooth audio sync for gaming and videos.

9. Are OnePlus Buds 4 compatible with non-OnePlus phones?

Yes, they work with any Bluetooth 5.4-enabled device (Android, iOS, Windows).

What is the price of the OnePlus Buds 4 TWS Earbuds in Bangladesh?

The latest price of the OnePlus Buds 4 TWS Earbuds  in Bangladesh is 9999tk. You can buy the OnePlus Buds 4 TWS Earbuds in Bangladesh at the best price from our imagine website or Our Outlet.