1. Introduction
Thank you for choosing the Shoumi LY903 Active Noise Cancelling Wireless Bluetooth Headphones. These headphones are designed to provide a superior audio experience with advanced features such as Bluetooth 5.0 connectivity, active noise cancellation, and a comfortable, foldable design. This manual will guide you through the setup, operation, and maintenance of your new headphones.
2. Package Contents
Please check the package for the following items:
- 1 x Shoumi LY903 Bluetooth Headset
- 1 x Micro-USB Charging Cable
- 1 x 3.5mm Audio Cable
- 1 x User Manual (Chinese and English)
- 1 x Headphone Storage Bag (or color box, depending on variant)
For non-visual users: The image displays the black Shoumi LY903 headphones alongside a Micro-USB charging cable, a 3.5mm audio cable, and a black zippered protective case.
3. Product Overview
3.1. Headphone Design
The Shoumi LY903 headphones feature an ergonomic, foldable, and retractable design for comfortable wear and easy portability. The earcups are made with skin-friendly and breathable materials.
For non-visual users: A close-up of the headphone's side, highlighting the retractable headband mechanism and earcups that can adjust by 30 degrees for a customized fit.
For non-visual users: A detailed view of the headphone's earcup, emphasizing its soft, skin-friendly, and breathable material for enhanced comfort.
3.2. Control Buttons and Ports
The control buttons and ports are located on the earcups for easy access:
For non-visual users: A diagram showing the right earcup with four buttons labeled from left to right: "Volume - / Front song", "Volume + / Next song", "Power on/off", and "Active Noise Cancelling Key".
For non-visual users: A close-up of the bottom edge of an earcup, indicating a "MICRO-USB PORT" for charging and a "3.5MM AUX" port for wired listening.
- Volume - / Front song: Decrease volume, or skip to the previous track.
- Volume + / Next song: Increase volume, or skip to the next track.
- Power on/off: Power the headphones on or off.
- Active Noise Cancelling Key: Activate or deactivate the Active Noise Cancelling (ANC) function.
- Micro-USB Port: For charging the headphones.
- 3.5mm AUX Port: For wired audio connection.
4. Setup Guide
4.1. Charging the Headphones
- Connect the Micro-USB charging cable to the Micro-USB port on the headphones.
- Connect the other end of the charging cable to a USB power source (e.g., computer USB port, USB wall adapter).
- The charging indicator light will illuminate.
- A full charge takes approximately 3 hours. The indicator light will typically change or turn off once charging is complete.
4.2. Bluetooth Pairing
- Ensure the headphones are fully charged.
- Press and hold the Power on/off button until the indicator light flashes, indicating pairing mode.
- On your smartphone, tablet, or laptop, enable Bluetooth and search for available devices.
- Select "Shoumi LY903" (or similar name) from the list of devices.
- Once connected, the indicator light will typically show a steady blue or turn off, and you will hear an audible confirmation.
For non-visual users: The image shows the Shoumi LY903 headphones positioned next to a smartphone, with a Bluetooth symbol indicating a successful wireless connection.
4.3. Wired Connection
To use the headphones in wired mode (even if the battery is depleted):
- Connect one end of the 3.5mm audio cable to the 3.5mm AUX port on the headphones.
- Connect the other end of the 3.5mm audio cable to the audio output jack of your device (e.g., smartphone, MP3 player, computer).
- The headphones will automatically switch to wired mode.
5. Operating Instructions
5.1. Power On/Off
- To power on: Press and hold the Power on/off button for a few seconds until the indicator light illuminates.
- To power off: Press and hold the Power on/off button for a few seconds until the indicator light turns off.
5.2. Music Playback
- Play/Pause: Short press the Power on/off button.
- Volume Up: Short press the Volume + button.
- Volume Down: Short press the Volume - button.
- Next Track: Long press the Volume + button.
- Previous Track: Long press the Volume - button.
5.3. Phone Calls
- Answer Call: Short press the Power on/off button when a call comes in.
- End Call: Short press the Power on/off button during a call.
- Reject Call: Long press the Power on/off button when a call comes in.
5.4. Active Noise Cancelling (ANC)
Press the dedicated Active Noise Cancelling Key to toggle the ANC function on or off. ANC helps to reduce ambient noise, providing a quieter listening experience.
For non-visual users: A graphic illustrating how Active Noise Cancelling works to create a quiet environment in noisy settings such as airplanes (eliminating fuselage and air friction sound), subways (staying away from roar), offices (comfortable environment), and during movement (quiet listening).
For non-visual users: A diagram showing the principle of active noise reduction. It illustrates how the exclusive noise reduction circuit chip receives and analyzes external noise, generates an opposite signal, and neutralizes the noise, effectively shielding it. It also differentiates between active and passive noise reduction, stating that active noise reduction can eliminate low-frequency noise (cars, subways) and reduce medium-high frequency noise.
6. Maintenance
6.1. Cleaning
Wipe the headphones with a soft, dry cloth. Do not use abrasive cleaners or solvents. Avoid getting moisture into any openings.
6.2. Storage
When not in use, store the headphones in the provided waterproof storage bag to protect them from dust and damage. The foldable design makes them easy to carry and store.
For non-visual users: The image shows a black, hard-shell, zippered earphone bag. One view shows it open with headphones neatly stored inside, and another view shows it closed, emphasizing its protective design.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones for at least 3 hours using the provided Micro-USB cable. |
| Cannot pair via Bluetooth. | Headphones not in pairing mode; Bluetooth disabled on device; device too far. | Ensure headphones are in pairing mode (flashing indicator). Enable Bluetooth on your device. Keep devices within 10 meters. |
| No sound in Bluetooth mode. | Volume too low; headphones not connected; incorrect audio output selected. | Increase headphone and device volume. Re-pair headphones. Check device's audio output settings. |
| ANC function not working. | ANC not activated. | Press the dedicated ANC button to activate. |
| Wired connection not working. | Cable not fully inserted; faulty cable. | Ensure the 3.5mm audio cable is securely plugged into both the headphones and the audio source. Try a different 3.5mm cable if available. |
7.1. Frequently Asked Questions (FAQ)
- Q: Can I use these headphones with an Android phone?
A: Yes, these headphones work on all smartphones and other devices with Bluetooth capability.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | LY903 / 061 |
| Bluetooth Version | V5.0 |
| Wireless Frequency | 2.40GHz-2.48GHz |
| Power Class | ≤ 4 dBm, Class 2 |
| Effective Range | 10m (Maximum wireless range: 10m-20m) |
| Sensitivity | -112dBm / 0.1% BER (112dB) |
| Frequency Response | 20 Hz - 20 KHz |
| Signal-to-Noise Ratio (S/N) | 70 dB |
| Total Harmonic Distortion | 0.10% (1%) |
| Speaker Size / Driver Diameter | 40mm |
| Transfer Protocols | A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 |
| Battery Voltage | 3.7VDC (built-in 350MAH rechargeable battery) |
| Talking Time | Up to 10 hours |
| Music Playback Time | Up to 8 hours |
| Standby Time | Up to 300 hours |
| Charging Time | Approximately 3 hours |
| Work Current | 40 mA |
| Operating Temperature | -4 ~ +131°F (-20 ~ +55°C) |
| Product Dimensions | Approx. 17 cm (6.69 inch) length, 17 cm (6.69 inch) width |
| Material | Plastic, Silica Gel |
| Earcups Type | Sealed |
| Max Output | 40mW |
| Number of Drivers | 2 |
| Charging Method | Cable (Micro-USB) |
| Headphone Pads Material | Silicone |
| Magnet Type | Ferrite |
| Impedance Range | Up to 32 Ω (Resistance: 32 Ω) |
| Audio Codecs | AAC, SBC, LDAC |
| Microphone | Yes |
| Wireless Capability | Yes |
| App Support | No |
| Waterproof | No |
| Line Length | 1.2m (Approx. 1.0 meter) |
| Plug Type | Line Type (3.5mm) |
| Active Noise-Cancellation | Yes |
| Volume Control | Yes |
| Control Button | Yes |
| Vocalism Principle | Orthodynamic |
| Wireless Type | Bluetooth |
| Connectors | 3.5 MM |
| Communication | Wireless+Wired |
| Style | Wireless headphone & headset |
| Certification | CE, FCC, RoHS |
| Origin | Mainland China |
| Bass Support | Yes |
| Wear Style | Headband earphone |
9. User Tips
- The foldable design and adjustable length hinges make these headphones very comfortable to wear and easy to carry, ideal for travel or daily commute.
- These headphones are an excellent choice for listening to music, watching movies, and online chatting due to their sound quality and comfort.
- The active noise cancelling feature is particularly effective in noisy environments like airplanes, subways, or busy offices, helping to create a quiet listening space.
- The skin-friendly and breathable earmuffs ensure comfort during extended use.
- Enjoy deep bass for an immersive gaming experience.
- The shiny outlook adds a fashionable touch to your audio gear.
10. Warranty and Support
For any product inquiries, technical support, or warranty claims, please refer to the contact information provided by your retailer or the manufacturer's official website. Keep your purchase receipt as proof of purchase.