I know that E-TEN M600 uses Microsoft stack, but i found below text about it's bluetooth stack :
"It uses an E-TEN-customised version of the Microsoft Bluetooth stack (with support for AKU 1.1), which visually, looks very similar to the Widcomm stack, supporting most of the well-known services that most of you are familiar with (headset partnerships, device browsing, ActiveSync via Bluetooth, file transfers, and business card exchanges)."
http://www.pocketpcthoughts.com/articles.php?action=expand,44578:dont_paginate,1
can i use this device ?