1. Okwu mmalite
Welcome to your ZIHNIC WH-920 Bluetooth 5.3 Noise Cancelling Headphones. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device. Please read it carefully to ensure optimal performance and a satisfying listening experience.
2. Ngwaahịa gafereview
The ZIHNIC WH-920 headphones are designed to deliver high-quality audio with advanced features for various environments. Key features include:
- Nkagbu mkpọtụ mkpọtụ: Engineered to significantly reduce ambient noise in low and mid-frequency ranges, such as city traffic and airplane cabins, providing a focused listening experience.
- Ụda Kwesịrị Ntụkwasị Obi: Equipped with 40mm large-aperture drivers for Hi-Res audio and deep bass, delivering detailed sound.
- Enhanced Connectivity and Call Quality: Features a built-in microphone and Bluetooth 5.3 technology for clear hands-free calls and stable connection up to 33 feet (10 meters).
- Ergonomic Design for Comfort: Crafted with skin-friendly protein leather and memory foam earpads. Lightweight, fully adjustable, and 90° swiveling earcups for a comfortable fit.
- Long Battery Life & Fast Charging: Up to 60 hours of continuous playtime with a full charge in 1.5 hours.

Figure 2.1: ZIHNIC WH-920 Bluetooth 5.3 Noise Cancelling Headphones.
3. Ihe ngwugwu
Biko lelee ngwungwu maka ihe ndị a:
- ZIHNIC WH-920 Noise Cancelling Headphones
- USB-C eriri USB
- 3.5mm Audio USB
- Akpa na-ebu
- Akwụkwọ ntuziaka onye ọrụ
4. Nhazi
4.1 Ịchaji ekweisi
Before first use, fully charge your headphones to ensure maximum battery life.
- Connect the provided USB-C charging cable to the charging port on the headphone earcup.
- Jikọọ nsọtụ nke ọzọ nke eriri USB-C na isi iyi ike USB dakọtara (dịka ọmụmaatụ, ihe nkwụnye mgbidi, ọdụ USB kọmputa).
- The LED indicator light will show charging status (refer to the specific light behavior in your quick start guide).
- Charging typically takes approximately 1.5 hours for a full charge, providing up to 60 hours of continuous playtime.

Figure 4.1: ZIHNIC WH-920 headphones illustrating long playtime and fast charging.
4.2 Gbanyụọ/ gbanyụọ
- Iji gbanye: Press and hold the Power button (usually located on the right earcup) for about 3 seconds until the LED indicator light illuminates.
- Iji gbanyụọ: Press and hold the Power button for about 3 seconds until the LED indicator light turns off.
4.3 Njikọ Bluetooth
Follow these steps to connect your headphones to a Bluetooth-enabled device:
- Gbaa mbọ hụ na agbanyụrụ ekweisi.
- Press and hold the Power button for approximately 5 seconds until the LED indicator light flashes blue and red alternately. This indicates the headphones are in pairing mode.
- Na ngwaọrụ gị (smartphone, tabletị, kọmpụta), mee ka Bluetooth nwee ike wee chọọ ngwaọrụ ọhụrụ.
- Select "ZIHNIC WH-920" from the list of available devices.
- Once connected, the LED indicator light will turn solid blue or flash blue slowly, confirming a successful connection.

Figure 4.2: Bluetooth 5.3 connectivity for ZIHNIC WH-920 headphones.
Vidiyo 4.1: Official overview of ZIHNIC WH-920 Noise Cancelling Headphones, demonstrating features and design.
5. Ntuziaka ọrụ
5.1 Nkagbu mkpọtụ mkpọtụ (ANC)
The ANC feature reduces ambient noise for a more immersive listening experience.
- Locate the ANC button on the earcup (refer to the product diagram in your quick start guide for exact location).
- Press the ANC button once to activate noise cancellation. An indicator light will confirm ANC is active.
- Pịa bọtịnụ ANC ọzọ ka gbanyụọ mkpọtụ mkpọtụ.

Figure 5.1: ZIHNIC WH-920 headphones with active noise cancellation enabled.
5.2 Njikwa Mgbasa Ozi
Control your audio playback using the buttons on the earcup:
- Gwuo/kwụsịtụ: Pịa bọtịnụ Multi-function ozugbo.
- Olu elu: Pịa bọtịnụ "+".
- Olu ala: Pịa bọtịnụ "-".
- Track na-esote: Pịa ma jide bọtịnụ "+".
- Gara aga Track: Pịa ma jide bọtịnụ "-".
5.3 Njikwa oku
Manage phone calls with the built-in microphone:
- Azịza/Kwụsị Oku: Pịa bọtịnụ Multi-function ozugbo.
- Jụ oku: Pịa ma jide bọtịnụ ọtụtụ ọrụ maka sekọnd iri na abụọ.
- Nọmba Ikpeazụ emegharịgharịrị: Pịa bọtịnụ Multi-function ugboro abụọ.

Figure 5.2: ZIHNIC WH-920 headphones with HD microphone for clear calls.
5.4 Low Latency Game Mode
For an optimized gaming experience, activate the low latency game mode to minimize audio delay.
- Refer to your product's specific controls for activating the low latency game mode. This feature ensures synchronized audio and video during gameplay.

Figure 5.3: ZIHNIC WH-920 headphones in use during a gaming session.
6. Nkasi Obi na Nhazi
The ZIHNIC WH-920 headphones are engineered for comfort during extended listening periods:
- Akpa ntị: Crafted with skin-friendly protein leather and plush memory foam for gentle, snug comfort without pressure.
- Ihe ndozi: Fully adjustable headband and earcups that swivel 90° ensure a personalized and perfect fit for various head sizes and shapes.
- Dị fechaa: The lightweight construction minimizes fatigue during long listening sessions.

Figure 6.1: Ergonomic design features for all-day comfort.
7. Nlekọta
Proper care will extend the life of your headphones:
- Nhicha: Jiri ákwà dị nro, kpọrọ nkụ, nke na-enweghị lint hichaa ekweisi gị. Ejila ihe nhicha ma ọ bụ ihe mgbaze.
- Nchekwa: When not in use, store the headphones in the provided carrying case to protect them from dust, scratches, and impacts.
- Ọnọdụ gburugburu: Avoid exposing the headphones to extreme temperatures, direct sunlight, humidity, or liquids.
8. Nchọpụta nsogbu
If you encounter issues with your ZIHNIC WH-920 headphones, try the following solutions:
8.1 Enweghị ike
- Gbaa mbọ hụ na chajịrị ekweisi nke ọma.
- Check that the charging cable is securely connected to both the headphones and the power source.
- Gbalịa eriri chaja dị iche ma ọ bụ nkwụnye ọkụ.
8.2 Cannot Pair via Bluetooth
- Make sure the headphones are in pairing mode (LED flashing blue and red).
- Gbaa mbọ hụ na agbanyere Bluetooth na ngwaọrụ gị.
- Move the headphones closer to your device (within 1 meter) during pairing.
- Clear previous Bluetooth connections from your device's Bluetooth settings and try pairing again.
- Malitegharịa ma ekweisi gị ma ngwaọrụ gị.
8.3 Poor Sound Quality or Disconnections
- Ensure the headphones are within the 33-foot (10-meter) Bluetooth range of your device.
- Check for physical obstructions or strong Wi-Fi signals that might interfere with the Bluetooth connection.
- Recharge the headphones if the battery is low.
- Try connecting to a different audio source to determine if the issue is with the source device.
8.4 Microphone Issues
- Gbaa mbọ hụ na ejikọrọ ekweisi nke ọma na ngwaọrụ gị.
- Check your device's audio input settings to confirm that the headphone microphone is selected as the input device.
- Gbaa mbọ hụ na egbochighị igwe okwu.
9. Nkọwapụta
| Aha Nlereanya | WH-920 |
| Ụdị | ZIHNIC |
| Njikwa mkpọtụ | Nkagbu mkpọtụ nọ n'ọrụ |
| Teknụzụ Njikọta | Ikuku (Bluetooth 5.3) |
| Ụdị Bluetooth | 5.3 |
| Oke Bluetooth | 10 Mita (33 ụkwụ) |
| Ụdị ọkwọ ụgbọ ala ọdịyo | Dynamic Driver (40mm large-aperture) |
| Ndụ batrị | 60 Hours (continuous playtime) |
| Oge Nchaji | Awa 1.5 |
| Ibu Ibu | 320 grams (11.3 ounces) |
| Akụkụ ngwaahịa | 6.7 x 6.7 x 3.35 sentimita asatọ |
| Ụdị ntị | Ntị karịa |
| Ihe onwunwe | Protein Leather, Memory Foam (earpads) |
| Usoro njikwa | Metụ, Njikwa mgbasa ozi |
10. Akwụkwọ ikike na nkwado
ZIHNIC provides a 12-month warranty for these headphones from the date of purchase. This warranty covers manufacturing defects under normal use.
For customer service, technical support, or warranty claims, please refer to the contact information provided with your purchase documentation or visit the official ZIHNIC website. Our support team is available to assist you with any questions or issues you may have.