Meet Bluetooth V2.0+ EDR standard Measurement:220x28x10mm Secure catching signals, encrypting, authenticating Measurement:139X60X25m Support Multi-paring to 8 mobiles at most Compatible with most prevailing Bluetooth mobile phones and kits fu... - Update: 2008-05-28

Meet Bluetooth V1.1 / 1.2 standard Secure catching signals, encrypting, authenticating Compatible with most prevailing Bluetooth mobile phones and kits full duplex handsfree conversation with digital echo cancellation, background noise reductio... - Update: 2008-05-28

Frequency:.4GHz-2.4835GHz, ISM band Talk/Standby Time:Up to 9 hours/300 hours Supporting profile headset and handsfree Connection peer to peer Data encryption:128 bits Power Source: inlaid quality rechargeable ithium battery, 5V DC, 100 ~ 2... - Update: 2008-05-28