CS50/CS55/CS60: Key Features

Key features of the CS50 headset:

8 hours of wireless, hands-free talk time
Up to 300 feet roaming distance from office phone
Digital 900MHz for secure conversations (CS50 only)
1.9 GHz DECT technology (CS60 & CS55)
Optional Lifter automatically lifts handset and returns it to the cradle
Enables remote or one-touch call answer/end with your Poly headset (only with lifter)
Mute and volume controls from headset
Wear over-the-head or behind-the-ear
Operates on 900 Mhz frequency (CS50 only)
Use up to 40 units with optimal range (additional units may decrease roaming range)
Compatible with most standard office phones

Key features of the CS55 headset:

Roam hands-free up to 300 feet
Extended hands-free talk time—up to 10 full hours
One-touch control to answer/end calls
Enjoy the flexibility of three convertible wearing styles
Ensure call privacy with digitally encrypted security
Reduce the wait: battery recharges in three hours
Mute and volume controls from headset
Operates on 1.9 GHz frequency
Use up to 40 units with optimal range (additional units may decrease roaming range)
Compatible with most standard office phones