3M Peltor WS ProTac headset differences between three of the models:
| Feature | **MT15H7AWS6** | **MT15H7AWS6-111** | **MT15H7BWS6-111** |
| **Mounting Style** | **Headband** (Over-the-head) | **Headband** (Over-the-head) | **Neckband** (Behind-the-neck) |
| **FLX2 Accessory Jack** | **No** | **Yes** | **Yes** |
| **External Audio Input** | No | Yes (via FLX2) | Yes (via FLX2) |
| **Attenuation (SNR)** | ~31 dB | ~31 dB | ~24 dB |
| **Weight (approx.)** | 365g (without gel cushions) | 373g (without gel cushions) | Lighter neckband design |
| **Bluetooth** | 4.2 Multipoint | 4.2 Multipoint | 4.2 Multipoint |
| **Battery Life** | 45 Hours | 45 Hours | 45 Hours |
| **Microphone Rating** | IP68 (Water/Dust proof) | IP68 (Water/Dust proof) | IP68 (Water/Dust proof) |