1. Introduction
The POLY Plantronics Savi 740 Wireless Headset System is designed for seamless communication across multiple devices, including your PC, mobile phone, and desk phone. This lightweight DECT wireless headset offers exceptional audio quality and versatile wearing styles to suit individual preferences and work environments.
Key features include:
- Multi-device Connectivity: Manage calls from PC, mobile, and desk phone with a single headset.
- DECT 6.0 Technology: Provides clear audio and extended wireless range up to 350 feet.
- Noise-Canceling Microphone: Filters out background noise for clear conversations.
- Convertible Wearing Styles: Choose from over-the-ear, over-the-head, or behind-the-head options for personalized comfort.
- Hot-Swappable Battery: Allows for unlimited talk time with an optional spare battery (sold separately).
2. Setup
2.1 What's in the Box
The Plantronics Savi 740 Wireless Headset System typically includes:
- Headset
- Battery
- Base and Charging Cradle
- Over-the-Head Headband
- Behind-the-Head Headband
- USB Cable
- Telephone Interface Cable
- Power Supply
- Headset Fit Kit (with ear loops, ear tips, and foam sleeve)
2.2 Connecting the Base Station
The base station serves as the central hub for your headset system. Connect it to your power source, desk phone, and computer as follows:
- Power Connection: Connect the power supply to the base station and plug it into a wall outlet.
- Desk Phone Connection: Use the provided telephone interface cable to connect the base station to your desk phone. Refer to your desk phone's manual for specific port locations (typically between the handset and the phone base, or a dedicated headset port).
- PC Connection: Connect the USB cable from the base station to an available USB port on your computer.
Once connected, the base station will power on and begin charging the headset when docked.

Figure 1: The Savi 740 base station connected to a laptop, desk phone, and mobile phone, illustrating its multi-device connectivity.
2.3 Wearing Styles
The Savi 740 headset offers three comfortable wearing styles. The included fit kit provides various ear loops, ear tips, and headbands to ensure a secure and comfortable fit.
- Over-the-Ear: Attach the desired ear loop and ear tip for a discreet fit.
- Over-the-Head: Attach the headset to the adjustable over-the-head headband for maximum stability.
- Behind-the-Head: Attach the headset to the behind-the-head neckband for an alternative secure fit.

Figure 2: A user wearing the Plantronics Savi 740 headset, demonstrating its comfortable and professional appearance.
3. Operating the Headset
3.1 Basic Call Management
The headset features intuitive controls for managing calls:
- Answer/End Call: Press the call control button on the headset to answer or end a call.
- Volume Adjustment: Use the volume +/- buttons on the headset to adjust listening volume.
- Mute: Press the mute button on the headset to mute or unmute your microphone.
3.2 Multi-Device Communication
The Savi 740 allows you to seamlessly switch between your connected devices:
- Switching Audio: Use the dedicated buttons on the base station to select the desired audio source (PC, mobile, or desk phone).
- Call Transfer: Easily transfer audio from the headset to your mobile phone with a press of a button, allowing you to take calls on the go.
- Conferencing: Conference in up to three additional Savi 740 headsets or join audio between any two of your three connected devices.
4. Maintenance
4.1 Battery Replacement
The Savi 740 features a hot-swappable battery, allowing you to replace it even during a call for unlimited talk time. A spare battery and charger kit are available separately.
- To replace the battery, gently slide the current battery out of the headset.
- Insert a fully charged spare battery into the headset until it clicks into place.
The base station's adaptive power system optimizes for range and talk time, automatically adjusting power consumption when the headset is close to the base to conserve battery life.
5. Troubleshooting
If you encounter issues with your Plantronics Savi 740 headset, consider the following steps:
- No Audio/Poor Audio Quality:
- Ensure all cables (power, telephone interface, USB) are securely connected to the base station and respective devices.
- Verify the headset battery is charged and properly seated.
- Check the selected audio source on the base station (PC, mobile, desk phone).
- Adjust the volume settings on both the headset and your connected device.
- Headset Not Connecting:
- Ensure the headset is docked correctly in the charging cradle.
- If connecting to a mobile device via Bluetooth, ensure Bluetooth is enabled on your mobile device and the headset is in pairing mode.
- Restart the base station by unplugging and re-plugging the power cable.
- Remote Call Answering Not Working:
- Ensure an Electronic Hookswitch Cable (EHS) or Handset Lifter (both sold separately) is correctly installed and configured for your desk phone model.
For further assistance, consult the full user manual or contact POLY support.
6. Specifications
| Model Name | W740 |
| Item Model Number | 83542-01 |
| Brand | POLY |
| Connectivity Technology | Bluetooth, DECT 6.0 |
| Wireless Communication Technology | Bluetooth |
| Special Feature | Noise-Cancelling-Feature |
| Audio Performance | PC plus desk phone Wideband: up to 6,800 Hz |
| Digital Encryption | 64 bit |
| Battery Life (Talk Time) | Up to 7 hours |
| Wireless Range | Up to 350 feet (DECT) |
| Item Weight | 21 Grams (headset) / 0.741 ounces (total) |
| Product Dimensions | 9.84 x 7.05 x 6.1 inches |
| Material | Plastic |
| Color | Black |
7. Warranty and Support
The Plantronics Savi 740 Wireless Headset System is backed by a one-year limited warranty. For warranty claims, technical support, or additional product information, please visit the official POLY support website or contact their customer service.
Additional accessories, such as the Electronic Hookswitch Cable (EHS) or Handset Lifter for remote desk phone call answering, and a spare battery kit for unlimited talk time, are sold separately.





