- Konftel 55 Wireless- Bluetooth enabled- Flexible connectivity options; USB for VoIP calls, deskphones, cellular phone/tablets and headsets- Must be installed as a slave to a phone- OmniSoundHD-Superior audio quality- Rechargeable battery- LCD high-resolution color display- Switch and combine connections on the LCD display- Multiple languages in the telephone & quick reference guide- Record meetings on a memory card- Future-proof can be upgraded- Two-year warranty