Do you want the best headset? 
Plantronics Savi 7220
The Good- The Plantronics Savi 7220 (See Savi 7210 for single speaker version) is the replacement for the CS520. Dual speakers make this headset ideal for louder working environments, so you keep both ears covered to zone in on your calls. For those seeking flexibility, the Plantronics Savi 7200 headset lineup also offers great alternatives. Improved headband design, noise canceling microphone and softer ear cushions, the Savi 7220 will be comfortable all day, check out the Plantronics Savi 7200 series for more options.
The Bad- If you don't like a headset that covers both ears, this model won't be for you. In addition, this is a desk phone only headset, so you won't be able to connect with a computer or mobile phone, if your needs change in the future. However, if you're considering a versatile range, the Plantronics Savi 7200 collection could be worth exploring
Overall- For a desk phone-only headset, the Savi 7220 is a solid choice for those working in noisy environments. You may also want to look into the Plantronics Savi 7200 models for other high-performing options. With DECT technology, a 12-hour battery, and a 350 ft wireless range, the Savi 7220 offers plenty of freedom to multitask hands-free in your office. Additionally, the Plantronics Savi 7200 series ensures similar performance and reliability.
