BlueTake BT400 GII Bluetooth headset review

BlueTake is a Taiwanese company which specialized in Bluetooth devices such as adapters, routes, access points, Bluetooth CompactFlash cards, headsets etc. Their latest Bluetooth headset is the BT400 GII model.
Official Specs
Bluetooth v1.1 available
Supports Bluetooth Headset profile only (can not be used with Nokia 3650)
Carrer Frequency: 2.4GHz ~ 2.480GHz FHSS(Frequency Hopping Spread Spectrum)
Class II, 10 meters radio coverage area (in open space)
Rx Sensitivity < -80 dBM
Standby time: 100 hours
Talk time: 4 hours
Foldaway microphone
Adjustable ear hook
Changeable color plate
Dimension: 92mm x 50mm x 26mm
Weight: 26g
Optional accessories:
* Color Plate
* Car Charger
* Black Jacket
* BT009S Bluetooth USB Adapter
Sales Package:
1 x mini CD
1 x Bluetake BT400 GII
1 x AC adaptor
1 x BT400 quick-start leaflet
1 x warranty card
Things that are NOT allowed: