Advent EchoPhonz BT500 Bluetooth Headset with Micro SD slot launched for Rs. 1999
Advent has launched EchoPhonz BT500, it’s latest Bluetooth headset with built-in mic. It uses Bluetooth 3.0 to connect to devices, has chrome borders and promises 4 to 6 hours of playing time using the built-in rechargeable lithium ion battery that ... 
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