Enjoy simplified mobility with the ultimate Bluetooth headset, the Plantronics Discovery 640. With an innovative pocket charger that gives you up to 15 hours of talk time, you stay connected like never before. Combining cutting-edge technology and a sleek, ultra-light design, Discovery sets the standard in style, comfort and convenience.
Selection Guide. Choose the headset model that best fits your needs.
| Headset Series | Pulsar 590 | Discovery 640 | Explorer 320 | Voyager 510 | M2500 | M3500 |
| Features |
| Audio IQ technology | - | - | - | - | - | X |
| DSP technology and active noise cancellation | - | - | - | - | - | X |
| Talk time (max. hours) | Up to 12 hours | Up to 5 hours increasing to 15 hours w/AAA charger | Up to 8 hours | 6 hours | 5 hours | 3.5 hours |
| Standby time (max. hours) | 130 | 70 | 240 | 100 | 120 | 76 |
| One-touch volume control | X | X | X | X | X | X |
| One-touch mute control | X | X | - | X | X | X |
| One-touch call answer/end | X | - | X | X | X | X |
| One-touch voice dialing* | - | X | X | X | X | X |
| Noise-canceling microphone | TBD | TBD | TBD | X | - | X |
| Weight | 97.7g | 9g | 17g | 15g | 22g | 27g |
| Compatibility |
| Switch between Bluetooth-enabled devices | - | X | - | X | - | - |
| Supports headset and hands-free profile | X | X | X | X | X | X |
| Bluetooth version 1.1 | - | - | - | - | - | X |
| Bluetooth version 1.2 | X | X | X | X | X | - |
*Headsets feature voice-activated dialing if supported by your phone or service.
