The PC 21 headset from Sennheiser is an ideal choice for Internet communication. The headset has a single earpiece with a foam cushion, allowing you to maintain awareness of your surroundings. The noise-cancelling boom mic filters out background noise and is adjustable for finding the perfect position. The dual 3.5mm plugs connect to your computer's microphone and headphone jacks for plug-and-play compatibility. Whether playing computer games or conducting business chats over VoIP, the PC 21 is a terrific option.
| Type | Headset, Single-Ear |
| Frequency Range | 40Hz - 18kHz |
| Impedance | 32 Ohms |
| Sensitivity | 109dB |
| Maximum Input Power | Not Specified by Manufacturer |
| Connectors | 2 x 3.5mm Mini Plugs |
| Cable Length | 9.8' (3 m) |
| Weight | Not Specified by Manufacturer |