Introduction
The OLOEY M88 Plus TWS Wireless Headphones are designed to provide a superior audio experience with advanced features and a comfortable fit. These earbuds incorporate a new Bluetooth V5.3 chip for stable connectivity, intelligent noise reduction for clear sound, and a smart battery display for convenience. Their compact and exquisite design ensures a firm and comfortable fit for various activities.
Package Contents
Please check the box for the following items:
- M88 Plus TWS Earbuds (Left and Right)
- Charging Case
- USB Type-C Charging Cable
- User Manual
- Earmuffs (Ear Tips)

Specifications
| Feature | Description |
|---|---|
| Item Condition | New |
| Material | Metal, ABS, Plastic |
| Voice Assistant Built-in | Yes (Apple Siri Support) |
| Maximum Wireless Range | <10m |
| NFC Technology | No |
| Sound Isolating | Yes |
| Category | Earphones & Headphones |
| Earcups Type | Semi-open |
| Charging Method | Charging case |
| Headphone Pads Material | Fabric |
| Magnet Type | Ferrite |
| Impedance Range | up to 32 Ω |
| Bluetooth Version | 5.3 |
| Features | With microphone, Playback Control |
| Codecs | None |
| With Microphone | Yes |
| Is Wireless | Yes |
| Support APP | No |
| Waterproof | No |
| Frequency Response Range | - |
| Plug Type | None |
| Function | Video Game, Common Headphone, Mobile Phone, HiFi Headphone, Sport, Hearing Aid, Outdoor, Office, Sleep, DJ, Study |
| Active Noise-Cancellation | No |
| Volume Control | Yes |
| Control Button | Yes |
| Vocalism Principle | Dynamic |
| Wireless Type | Bluetooth |
| Connectors | Type C |
| Communication | Wireless |
| Style | In-ear |
| Certification | None |
| Origin | Mainland China |
| Support Memory Card | No |
Setup Guide
1. Charging the Earbuds and Case
The M88 Plus charging case features a self-contained outlet and supports both wired and wireless charging for efficiency. It also functions as an emergency power bank for mobile phones, preventing unexpected shutdowns.
- Connect the provided USB Type-C cable to the charging case and a power source to charge the case.
- Place the earbuds into the charging case. They will begin charging automatically.
- The smart display on the case will show the battery levels of the left earbud, charging chamber, and right earbud.



2. Bluetooth Pairing
The M88 Plus earbuds feature automatic connection upon opening the case and offer multi-device compatibility.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "M88 Plus" from the list of devices to connect.
- Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.

Operating Instructions
Touch Controls
The M88 Plus earbuds feature high-precision touch controls for easy operation of various functions.

Specific touch functions (e.g., play/pause, skip track, answer call, activate voice assistant) are typically detailed in the included user manual. Refer to that document for a complete list of gestures.
Key Features
- Intelligent Noise Reduction: Enhances call clarity and audio experience.
- Smart Battery Display: LED screen on the charging case shows battery levels for both earbuds and the case.
- Emergency Power Bank: The charging case can be used to charge your mobile phone.
- Long Battery Life: Up to 72 hours of total battery life with the charging case.
- Stereo Sound: Equipped with an ACC decoding chip for high-quality stereo audio.
- Master-Slave Switchover: Allows for seamless use of either earbud independently.
- HD Call: Features HD call noise reduction for clear conversations.
- Game Mode: Provides a non-inductive delay experience for gaming.
- Sliding Cover Charging Bay: A new design for the charging case.
- LED Esports Lighting: Full display of esports temperament.



Maintenance
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Charging Ports: Keep the USB-C charging port free of dust and debris.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Avoid Water: The earbuds are not waterproof. Avoid exposure to water, sweat, or high humidity.
- Temperature: Do not expose the device to extreme temperatures (hot or cold).
Troubleshooting
- Earbuds not pairing: Ensure both earbuds are in the charging case, then open the lid to activate pairing mode. Check your device's Bluetooth settings and try reconnecting.
- Only one earbud working: Place both earbuds back into the charging case, close the lid, wait a few seconds, then open it again. This often resets the master-slave connection.
- Charging issues: Ensure the USB-C cable is securely connected to both the case and the power source. Check if the charging indicator on the case is active.
- Low volume or poor sound quality: Check the volume level on both your device and the earbuds. Ensure the ear tips are properly seated in your ears for a good seal. Clean any debris from the earbud speakers.
- Earbuds not turning on: Ensure the earbuds are charged. Place them in the charging case and allow them to charge for at least 30 minutes.
User Tips
- Quantity Clarification: The M88 Plus headphones are available in various pack sizes (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, or 15 pieces). Please verify the quantity specified at the time of purchase to ensure you receive the correct number of units.
- Optimal Fit: Experiment with the included earmuffs (ear tips) to find the size that provides the best seal and comfort for your ears. A good seal is crucial for sound quality and passive noise isolation.
- Emergency Power: Remember that the charging case can act as an emergency power bank for your phone, a useful feature when on the go.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact details provided by your retailer or the official OLOEY website. Keep your proof of purchase for any warranty claims.