This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.
services property provides a list of Bluetooth services the device is able to provide. For a full list of possible Bluetooth services see the Bluetooth specification.
var services = instanceOfBluetoothDevice.services
Array of strings.
Not part of any specification yet. It should be discussed as part of the W3C's System Applications Working Group.