Bluetooth Wireless skype phone Wireless transmission range of up to 15M Wireless Phone function: Display caller ID, answer/ring off/reject calling Support Multi-languages display Display calling time Skype Out display function & balance charge Skype speed dial function Call history (display caller, calling time) Voices mail/accept mail box message Caller list displayed as group, convenience to manage caller Conference call(1+4 caller synchronous call) Microphone sound off function Calling insert dial function Support DTMF voice (use to dial extension) BLUETOOTH SPEC: Comply with Bluetooth Specification V2.0 + EDR Enhanced Data Rate (EDR) compliant with v0.9 of specification for both 2Mbps and 3Mbps modulation modes Support up to 7 ACL connection and 3 SCO connection Support Faster connection, Flush timeout, Synchronisation, LMP improvements, AFH, Parameter ranges and LMP SCO Handle. Up to 12 PIO/ 3 AIO pin definitions is ideally suited for rapid embedded development any kind of products. 13 or 16bit linear,8bit u-Law or A-Law PCM interface Compact size (25x14.5x 2.4mm ) can be fit any type of product RF output power ?dBm -- +4 dBm (class 2). General Specification: High receiving sensitivity (-85 dBm 0.1%BER). Supply Voltage VDD: 3.3V+/-0.1V Regulated supply voltage Carrier Frequency: 2400MHz to 2483.5MHz( USA , Spain ,France) Modulation Method: GFSK,1Mbps,0.5BT Gaussian Maximum Data Rate: Asynchronous:723.2kbps/57.6kbps Synchronous:433.9kbps/433.9kbps Transmission Power:+3dBm to ?0dBm; Power control 6 stage Hopping: 1600hops/sec, 1MHz channel space Receiving Signal Range: -83dBm to -20 dBm Output Interface: PCM,UART Operation Temperature: -40 to +85 degree Storage Temperature: -40 to +105 degree Absolute Max Supply Voltage: 3.6V for VDD,other VDD +0.3V Bluetooth Specification: Ver 2.0