User's Manual

1
About CK21 Bluetooth Speakerphone
2
About Bluetooth Technology
1
This versatile Bluetooth speakerphone is portable and specially designed for the user
to enjoy convenience and freedom of wireless communication. Dual capacity of use on
desk-top like a conference Speakerphone and in-car like a Hands-Free car kit.
CK21 built advanced DSP technology for Echo Cancellation & Noise Suppression,
provides you excellent full duplex sound quality.
Bluetooth is a short-range wireless communication technology. The Bluetooth wireless
technology makes it possible to connect any compatible portable and stationary
communications device without using cables. The technology is based on a radio link
that offers fast and reliable transmission of voice and data information. Bluetooth
refers to a worldwide standard designed to operate in the internationally recognized
ISM (Industrial Scientific and Medical) frequency band. Within the ISM band (2.4GHz~
2.485GHz), Bluetooth transmissions hop between 79 separate frequencies 1.600 times
every second, and with a communication range of about 10 meters. Your handset must
support Bluetooth.