Introduction
Welcome to the user manual for your Plantronics Backbeat 505 Series Wireless Headphones. These headphones are designed to provide a comfortable and immersive audio experience with up to 18 hours of listening on a single charge. Featuring a lightweight design, cushioned earcups, and advanced acoustic technology, they deliver rich sound for music, movies, and calls.

Figure 1: Front view of the Plantronics Backbeat 505 Series Wireless Headphones.
Setup
1. Charging the Headphones
Before initial use, fully charge your headphones. The Backbeat 505 Series offers up to 18 hours of wireless listening on a single charge. DeepSleep mode helps conserve power when not in use.
- Connect the provided USB charging cable to the charging port on the headphone.
- Connect the other end of the USB cable to a compatible USB power source.
- The LED indicator will show charging status and turn off when fully charged.
2. Bluetooth Pairing
To connect your headphones to a device via Bluetooth:
- Ensure your headphones are powered off.
- Press and hold the power/Bluetooth button until the LED indicator flashes red and blue, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "Plantronics Backbeat 505" from the list.
- Once connected, the LED indicator will typically show a solid blue light.
Operating Instructions
1. Headphone Controls
The headphones feature intuitive on-ear controls for easy management of your audio and calls.

Figure 2: Side view showing the control buttons on the headphone earcup.
- Volume Up/Down: Use the '+' and '-' buttons to adjust the listening volume.
- Play/Pause/Call Management: The central button (often between +/-) controls playback (play/pause) and call functions (answer/end calls).
- Track Skip: Depending on the model, long-pressing the volume buttons or dedicated buttons may skip tracks forward or backward.
- Power On/Off: Press and hold the power button for a few seconds.
2. Wearing the Headphones
The Backbeat 505 Series is designed for comfort during extended use.
- The headband is adjustable to fit various head sizes.
- Soft memory foam earcups provide comfort and sound isolation.
- Earcups can rotate to lay flat, allowing comfortable wear around your neck when not actively listening.
3. Wired Mode (3.5mm Audio Jack)
For situations where wireless connectivity is not available or preferred, you can use the included 3.5mm audio cable.
- Connect one end of the 3.5mm audio cable to the headphone's audio jack.
- Connect the other end to your device's 3.5mm audio output.
- This allows for uninterrupted listening even if the headphone battery is depleted.
Maintenance
1. Cleaning
To maintain the condition and hygiene of your headphones:
- Wipe the earcups and headband with a soft, damp cloth.
- Avoid using harsh chemicals or abrasive materials.
- Ensure the charging port and audio jack are free from dust and debris.
2. Storage
When not in use, store your headphones properly to prevent damage.
- The earcups can rotate to lay flat, making them easier to store in a bag or case.
- Store in a cool, dry place away from extreme temperatures.
Troubleshooting
1. No Power
- Ensure the headphones are fully charged. Connect to a power source and check the LED indicator.
2. Cannot Pair via Bluetooth
- Make sure the headphones are in pairing mode (LED flashing red/blue).
- Ensure Bluetooth is enabled on your device and it is within range (up to 32.8 ft).
- Try forgetting the device on your phone's Bluetooth settings and re-pairing.
3. Poor Audio Quality
- Check the volume levels on both the headphones and your connected device.
- Ensure there are no obstructions between your device and the headphones.
- If using wired mode, ensure the 3.5mm cable is securely connected.
Specifications
| Feature | Detail |
|---|---|
| Model Number | 505 |
| Connectivity Technology | Wired, Wireless (Bluetooth) |
| Wireless Operating Distance | 32.8 ft |
| Sound Mode | Stereo |
| Earpiece Design | Over-the-head |
| Battery Life | Up to 18 Hours |
| Audio Driver Size | 40 Millimeters |
| Item Weight | 5.5 ounces (155 Grams) |
| Material | Memory Foam |
| Control Type | Media Control |
| Special Feature | Lightweight, Microphone Included |
Warranty and Support
For warranty information and customer support, please refer to the official Plantronics (Poly) website or contact their customer service directly. Keep your proof of purchase for any warranty claims.




