This API is available on Firefox OS for internal applications only.
Summary
The class property value provides the Bluetooth "Class of Device" number of the device's adapter. This number provides much information about the device's capabilities. See the Bluetooth specification 4.0, section 6.26 for further information about the meaning of that number.
Syntax
var CoD = instanceOfBluetoothAdapter.class
Value
Return a number.
Specification
Not part of any specification yet. It should be discussed as part of the W3C's System Applications Working Group.