Plantronics Discovery 975 Bluetooth Headset Handsfree HK
100% works - charging base/box also works.
Charging base/box is very old and damaged in appearance but works 100% (see photos).
Light scratches on headset (see photos).
Charging base/box does not seem to hold a charge very well anymore but the headset battery is normal.
Comes with all the original packaging, accessories and manuals.
More photos: http://imgur.com/a/LW5IC
Trade at Olympic Station MTR.