SPECIFICATIONS

 

Active Noise-Cancellation: Yes

 

Audio latency: 0.1

Battery Capacity[mAh]: 62mAh

Battery life up to[hours]: 45Hours

Bluetooth Version: Other

Category: Earphones & Headphones

Charging Method: Charging case

Charging Time: 0.5

Communication: WireLess

Connectors: None

Control Button: No

Control Method: Touch

Department: Unisex-adult

Driver Diameter: 11

Features: Waterproof,With microphone,Active Noice Cancelling,Dual Connection

Frequency Response Range: 15 - 40000

Function: For Internet Bar,Monitor Headphone,for Video Game,for Flying,Common Headphone,for Hunting & Shooting,For Mobile Phone,for Powersports,HiFi Headphone,Sport,Kids' Headphones,For Hearing Aid,For Outdoor,For Office,For Sleep,For DJ,For Study

High-concerned chemical: none

Impedance Range: up to 32 Ω

Is wireless: Yes

Material: Plastic

Maximum wireless range[m]: <10m

NFC Technology: no

Number Of Drivers: 2

Sound Isolating: Yes

Speaker maximum output power: 10

Style: Tws in-ear headphones

Support APP: Yes

Support Memory Card: No

Vocalism Principle: Dynamic

Voice assistant built-in: no

Volume Control: No

Waterproof: Yes

Weight[g]: 49

Wireless Type: Bluetooth

With Microphone: Yes

whether electrical: No

 

2025 Officia Oneplus Buds 4 TWS Wireless Bluetooth Earphone LHDC 5.0 55dB Active Noise Canceling 45h Battery Life For Oneplus 13

Product model (headphones/charging box)
: E513A

Sounding unit
: 11mm+6mm dual dynamic coil speaker

Speaker sensitivity
: 118±1.3dB @1mW

Frequency response range
: 15Hz-40kHz

Microphone sensitivity
: -38±1dB

Bluetooth codec
: LHDC5.0/AAC/SBC

Bluetooth version
: 5.4

Bluetooth effective distance
: 10m

Battery Type
: Rechargeable lithium-ion battery

Headphone battery:  62mAh

Battery capacity

Charging case battery: 530mAh

Noise reduction opening: 6H/24H

Music playback time (AAC encoding, default settings, 50% volume)

Permeability: 6.5H/27H

Noise reduction: 11H/45H

Noise reduction/transparency: 5.5H/22H

Music playback time (LHDC encoding, default settings, 50% volume)

Noise reduction: 9H/37H

Headphones for about 50 minutes

Charging time

The whole machine is about 80 minutes

Charging input (charging box)
: 5V-1.5A

Charging input (single headset)
: 5V=0.2A

Charging output (charging box to headphones)
: 5V0.4A

Charging port
: Type-C

Waterproof grade (headphones)
: IP55

Net weight - complete machine
: 49.02+1g

Net weight - headphones
: 4.73±0.2g

Net weight - charging box
: 39.57±1g

Size - Whole machine
: 65.4mmx52.4mmx25.3mm

Size - Headphones
: 31mmx20.6mmx24.2mm

Q1: Instructions on OnePlus Buds 4 LHDC5.0

A1: High-quality Bluetooth-encoded LHDC needs to be supported by both the mobile phone and the headset before it can be used. Non-OnePlus/OPPO requires high-quality Bluetooth encoding, and it is necessary to ensure that the phone supports LHDC. OnePlus Buds4's LHDC5.0 is not backward compatible. If OnePlus/OPPO mobile phones need to achieve the effect of LHDC5.0, you need to ensure that the mobile phone supports LHDC and the system version is ColorOS 13.1 and above: Please consult the corresponding mobile phone manufacturer whether other brand phones support LHDC5.0.

Thank you for shopping with The Covers Nest!
We’re dedicated to providing you with fast and reliable delivery every time you order.

Processing Time

All orders are processed within 1–2 business days.
During this period, we carefully verify, package, and dispatch your items to ensure they reach you in perfect condition.

Delivery Time

Once shipped, orders are typically delivered within 10–15 business days, depending on your location and local courier services.

International Shipping

We proudly ship worldwide!
International orders may take slightly longer depending on your country’s customs process and postal services — typically 10–20 business days.
Please note that any customs fees, duties, or taxes applied by your country are the customer’s responsibility.

Shipping Confirmation & Tracking

You will receive a shipping confirmation email with your tracking number once your order has been shipped. You can use this number to monitor your shipment’s progress online.

Delays

While we always aim to deliver on time, unforeseen factors such as weather, customs delays, or courier disruptions may occasionally cause delays.
If your order is delayed, please don’t hesitate to contact our support team — we’ll assist you right away.

Contact Us

If you have any questions regarding your order or shipping, please contact our support team at:
📧 sameer.nextcomautomation@gmail.com

Provided the conditions in our refund policy have been met, refunds will be processed using the original form of payment. You can return an item purchased online by posting it to us. Please contact customer service for return address. Please note that delivery costs will be excluded from the refund unless goods are returned in accordance with your statutory rights (e.g. they are faulty or not as ordered).

• The items with the original receipt are returned within 30 days of purchase.

• Items must be in the original condition as purchased with all labels/tickets attached.

Provided the conditions in our refund policy have been met, refunds will be processed using the original form of payment. You can return an item purchased online by posting it to us. Please contact customer service for return address. Please note that delivery costs will be excluded from the refund unless goods are returned in accordance with your statutory rights (e.g. they are faulty or not as ordered).