Acer OHR305
Over-Ear Wireless Noise-Canceling Headphones
Quick Setup Guide
Product Specifications
| Product Name/Model | OHR305 |
|---|---|
| Bluetooth Version | Bluetooth 5.4 |
| Bluetooth Chip | JL 7006F4 |
| Supported Audio | SBC and AAC decoder |
| Hardware Version | HBE232_P200_MAIN_ANC_V1.1 |
| Battery Capacity | Lithium Battery 3.7V / 500mAh, Charging via DC5V |
| Audio System | Stereo |
| Charging Time | Approx. 2 Hours |
| Supported Protocols | A2DP, AVRCP, HSP, HFP |
| Charging Standard | Type-C, DC5V/280mA |
| Frequency Response | 20Hz–20kHz |
| Effective Range | ≥10 Meters |
System Requirements
Desktop computers, laptops, and other devices supporting Bluetooth connectivity.
Safety Precautions
- Avoid prolonged and excessive use of the headphones at high volumes to prevent potential hearing damage.
- Keep the device dry. Keep it away from rain, moisture, liquids, and condensation.
- Do not use the product with wet hands.
- Avoid using or storing the device in dusty or dirty environments.
- Do not expose the device to extremely high or low temperatures (may cause damage).
- Do not drop, hit, or shake the device (may result in malfunctions).
Operation Guide
Basic Functions
Volume Control
Press the "+" button to increase volume. Press the "-" button to decrease volume.
Music Control
Previous Track: Long press the "-" button. Next Track: Long press the "+" button. Play/Pause: Single press the Play/Pause button.
Call Control
Answer/End Call: Press the Play/Pause button.
Mode Switching
Triple-press the Play/Pause button to switch between Game Mode and Music Mode.
Product Button Interface
①. Volume Down, Previous Track / Volume Up, Next Track
②. Play/Pause, Decline Call / Power On/Off / Mode Switch
③. 3.5mm Audio Jack ?
④. Type-C Charging Port ?
⑤. Noise Cancellation Switch (ANC Switch)
LED Indicator Description
| Function | Headphone Status | Description |
|---|---|---|
| Power On/Off | In Use/After Shutdown | Blue LED flashes (power on) / Blue LED turns off (power off) |
| Music Control | Music Playing | Blue LED stays on (paused) / Blue LED flashes slowly (playing) |
| Answer/ End Call | During Call | Blue LED flashes slowly |
| ANC On/Off | ANC Enabled/ Disabled | Green LED stays on (ANC on) / Green LED turns off (ANC off) |
| Pairing/ Connection | Pairing Mode/ Connected | Blue LED flashes rapidly (pairing) / Blue LED stays on (connected) |
| Low Battery Alert | Low Battery ? | Blue LED flashes slowly and turns off after shutdown |
| Charging | Charging ? | Red LED stays on during charging / LED turns off when fully charged |
Bluetooth Connection Method for Mobile Phone
Press and hold the Power button until the blue LED flashes slowly, then release. Search for the device "OHR305" on your phone and tap to connect. Once connected, the blue LED will stay on.
ANC Function Usage
After powering on, click the ANC button once to enter the transparency mode. Click it again to enter the noise-canceling mode. Click it one more time to turn off the noise-canceling mode, and this cycle repeats. When the transparency mode or ANC mode is turned on, the green light stays on; when the mode is turned off, the green light goes out.
Charging Method
When the earphone's battery is low ?, take the included USB charging cable, insert one end into the Type-C charging port ? of the device, and the other end into the USB port of a computer or a phone charger to start charging.
Troubleshooting
If the operation is incorrect, please follow these steps:
- Check the integrity of the connector.
- Check the connection to the device.
- Check the settings of your device.
- Disconnect and reconnect the device; restart the device.
If the problem persists, please contact your local seller.
Names and Contents of Hazardous Substances in the Product
This table is prepared in accordance with SJ/T 11364.
| Component | Pb | Hg | Cd | Cr | PBB | PBDE |
|---|---|---|---|---|---|---|
| Plastic Parts | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. |
| Metal Parts | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. |
| Circuit Board Components | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. |
| Cables | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. | Content below the limit specified in GB/T 26572. |
Note: The presence of a substance is indicated if its content in any homogeneous material of the component exceeds the limit specified in GB/T 26572.
Warranty & After-Sales Service
Warranty Period: One year from the date of purchase as specified on the sales invoice.
Place of Origin: China
Conditions Excluded from Warranty Coverage
- Failure to present this warranty card and valid purchase invoice.
- This card shows signs of alteration or does not match the product.
- Damage caused by improper use, e.g., liquid ingress, physical impact, etc.
- Damage due to environmental factors or force majeure.
- Self-disassembly, repair by non-authorized third parties.
- Damage caused by water exposure or humidity.
- Use in environments violating national regulations (e.g., lacking China Compulsory Certification, 3C).
- Cases not covered under warranty policies.
- Claims made after the warranty period has expired.
- Damage due to failure to follow user manual instructions for operation, maintenance, or storage.
After-Sales Service
Hotline: 400 680 8821
Service Hours: Mon–Sun, 9:00 AM–6:00 PM
Warranty Terms
- This certificate serves as proof of the Three Guarantees Policy (Repair, Replacement, Return) and warranty eligibility. Users must retain it for claiming services under the Regulations on Repair, Replacement, and Return of Microcomputer Products.
- This certificate will not be reissued if lost. Keep it securely and present it for repair requests.
- Replaced parts during repair will not be returned to users.
- In case of any discrepancy between this certificate and national regulations, the latter shall prevail.
Manufacturer: Dongguan Desheng Industrial Co., Ltd.
