1. Produk Langkungview
The Acer Ohr644 In-Ear Wireless Bluetooth Headphones are designed to provide a superior audio experience with advanced features such as Active Noise Cancellation (ANC), panoramic spatial sound, and extended battery life. These lightweight and comfortable earbuds are ideal for various activities, including sports, running, gaming, and daily use with mobile phones and tablets.

fitur konci ngawengku:
- Active Noise Cancellation (ANC) for an undisturbed listening experience.
- Panoramic Spatial Sound for an immersive audio environment.
- Wireless 5.4 Flash Connect Chip for anti-interference and ultra-stable connection.
- Ergonomic design for gentle and comfortable wearing, reducing ear burden.
- Environmental Noise Cancellation (ENC) for clear call quality.
- Long-lasting battery life with quick charging.
- Smart Dynamic Audio for delicate vocal texture and balanced sound.
2. Eusi Paket
Mangga parios pakét kanggo barang-barang ieu:
- Acer Ohr644 In-Ear Wireless Bluetooth Headphones (Left and Right earbuds)
- Ngecas Case
- Adaptor USB Tipe-C (Kabel Ngecas)
- Manual Pamaké (Dokumén ieu)
3. Spésifikasi
| Fitur | Spésifikasi |
|---|---|
| Ngaran Brand | Acer |
| Modél | oh644 |
| Bahan | palastik |
| Gaya | TWS Dina-Ceuli Headphone |
| Tipe Wireless | Bluetooth 5.4 |
| Komunikasi | Nirkabel |
| Panyambung | Tipe-C |
| Kapasitas Batré Earphone | 40mAh (per earbud) |
| Ngecas Kapasitas Batré Case | 350 mah |
| Waktos Puterkeun Musik | 5-6 jam |
| Waktu Ngecas | Kira-kira. 1.5 jam |
| Beurat Earphone | 4.0g (0.14oz) * 2 |
| Jangkauan Wireless Maksimum | <10m (accessible condition: ≥10m/393.7in) |
| Rentang Tanggapan Frékuénsi | 20Hz-20KHz |
| Vocal Unit (Driver Size) | Φ10mm / 0.394 inci |
| Rentang impedansi | Nepi ka 32 Ω |
| Aktif Noise-Cancellation (ANC) | Yes (Deep ANC, -56dB deepest, -37dB average reduction) |
| Pembatalan Noise Lingkungan (ENC) | Sumuhun (pikeun nelepon) |
| Kalayan Mikropon | Sumuhun |
| Volume Control | Sumuhun |
| Tombol kontrol | Sumuhun (Kadali Toel) |
| Tahan cai | No |
| Rojongan APP | No |
| Sertifikasi | CE, FCC, RoHS |

4. Setelan & Pamasangan
Your Acer Ohr644 headphones are designed for quick and seamless connection.
4.1 Papasangan awal
- Ensure your headphones are charged (refer to Section 6 for charging instructions).
- Buka wadah ngecas. Earbuds bakal otomatis asup kana mode papasangan.
- On your mobile phone or tablet, enable Bluetooth and search for available devices.
- Select "Acer Ohr644" from the list of devices to connect.
- Once connected, you will hear an audio prompt, and the indicator lights on the earbuds will change (specific light behavior not detailed, assume solid or off).
The headphones utilize a Wireless 5.4 Flash Connect Chip for anti-interference and an ultra-stable connection, ensuring continuous audio without stuttering.

4.2 Sambungan deui
After the initial pairing, the headphones will automatically connect to the last paired device when removed from the charging case and Bluetooth is enabled on the device.
5. Controls & Functions
The Acer Ohr644 headphones feature intuitive touch controls on both earbuds. The touch area is typically located on the outer surface of the earbud stem.

5.1 Music Mode Controls
- Reureuh/ulin: Ketok sakali dina earbud Kénca (Kénca) atanapi Katuhu (Kénca).
- Lagu Salajengna / Saméméhna: Double tap on either the Left (L) or Right (R) earbud.
- Aktipkeun Asisten Sora: Triple tap on either the Left (L) or Right (R) earbud.
5.2 Call Mode Controls
- Ngajawab Telepon: Double tap on either the Left (L) or Right (R) earbud.
- Ngagantung Telepon: Double tap on either the Left (L) or Right (R) earbud during a call.
- Nolak Telepon: Long press (hold for 2 seconds) on either the Left (L) or Right (R) earbud.
5.3 Active Noise Cancellation (ANC) Function Conversion
- Togél Modeu ANC/Transparansi: Long press the function key (touch area) on either earbud until you hear a 'beep' sound. This will cycle through Transparency Mode, ANC On, and ANC Off.

6. Active Noise Cancellation (ANC)
The Acer Ohr644 headphones feature advanced Active Noise Cancellation technology to provide an immersive and undisturbed listening experience.
6.1 How ANC Works
The intelligent noise reduction algorithm responds in milliseconds to environmental noise changes, effectively isolating up to 99% of environmental noise. This deep ANC noise reduction targets various types of noise, including:
- Low frequency wind noise
- Vocal noise
- Vehicle honking
- Subway noise

6.2 Enhanced Call Clarity (ENC)
In addition to ANC for listening, the headphones incorporate Environmental Noise Cancellation (ENC) to filter out environmental noise during calls, ensuring your voice is heard clearly.

6.3 Noise Reduction Technology Breakdown
The ANC system is comprised of:
- Digital Signal Processor: Shields noise and optimizes sound waves.
- Adaptive Active Noise Reduction: More delicate sound source to isolate noise.
- HD Noise Reduction Chip: Provides faster noise processing.
- Sound Absorbing Soft Adhesive: Ensures a perfect fit in the ear canal for optimal noise isolation.
The noise reduction frequency range is 20-20kHz, with a deepest noise reduction depth of -56dB and an average reduction of -37dB.

6.4 Optimized ANC Scenarios
The intelligent noise reduction algorithm is optimized for various daily scenarios:
- Airplane: Automatic deep noise reduction and hearing protection against excessive aircraft noise.
- Kabugaran: Significant increase in noise reduction depth, effectively weakening severe low-frequency noise.
- Kantor: Exclusive optimization solution for keyboard sound, air conditioning sound, and human voice.

7. Ngecas
To ensure continuous use, keep your Acer Ohr644 headphones and charging case adequately charged.
7.1 Ngecas Earbuds
Place the earbuds into the charging case. They will automatically begin charging. The earbuds have a 40mAh battery capacity each, providing 5-6 hours of music playback on a single charge.
7.2 Ngecas Casing
Connect the provided USB Type-C cable to the charging port on the case and to a power source. The charging case has a 350mAh battery capacity. A full charge for both the earbuds and case takes approximately 1.5 hours.

8. Wearing & Comfort
The Acer Ohr644 headphones are designed for gentle and comfortable wear, minimizing burden on your ears even during extended use.
- Desain ringan: Each earbud weighs only 4g (0.14oz).
- ErgoFit Ergonomics: Based on human ear data models, the design ensures a comfortable fit for various ear sizes.
- Biomimetic Ear Curve: The ergonomic design conforms naturally to the ear.
- Ujung Ceuli Silikon: Provide a comfortable fit and contribute to noise reduction.

9. Cara ngungkulan
If you encounter any issues with your Acer Ohr644 headphones, please refer to the following common troubleshooting steps:
- Henteu aya Masalah Sora/Koneksi:
- Pastikeun kadua earbuds dicas.
- Pastikeun Bluetooth diaktipkeun dina alat Anjeun.
- Pareuman sareng aktipkeun Bluetooth alat anjeun.
- Place earbuds back in the case, close it, wait a few seconds, then open it again to re-initiate pairing.
- Forget "Acer Ohr644" from your device's Bluetooth settings and re-pair.
- Hiji Earbud Teu Gawé:
- Pastikeun kadua earbuds dicas.
- Lebetkeun deui dua earbud kana wadah ngecas, tutup tutupna, teras buka deui. Ieu sering nyingkronkeun deui duanana.
- Try resetting the earbuds (if a reset procedure is available, it's usually a long press on both earbuds while in the case, or a button on the case itself - specific reset not detailed in provided data).
- ANC Teu Berfungsi:
- Ensure ANC is activated via the touch controls (long press to cycle modes).
- Check that the earbuds are properly seated in your ears to create a good seal.
- Kualitas Telepon goréng:
- Pastikeun mikropon teu ngahalangan.
- Check your network connection if using a mobile phone.
- Ensure ENC is active (it typically works automatically during calls).
If the issue persists, please contact Acer customer support for further assistance.
10. Tips pamaké
Taya tips pamaké husus éta sadia ti disadiakeun ulangviews atawa eusi Q&A.
11. Jaminan & Dukungan
For warranty information and technical support, please refer to the official Acer website or contact your local Acer service center. Keep your proof of purchase for any warranty claims.





