I have the ideals test environment for me is the real device coupled with all let's start coupled to Siemens Gigaset S810 recognition after seconds. Crystal clear sound and voice quality. Even the Caller ID works when someone calls as well as the call is answered on the headset. The best part is the built-in voice control you then says Paring and Incoming Call When did it by disabling matter what you do the headset talking preset in English with you (German there is not yet a language) but the few words English everyone will understand.
Let my PC with Bluetooth 4.0 immediate recognition after seconds, crystal-clear sound as well as a PC headset and used as stereo headphones hammer sound thanks to Bluetooth 4.1 plus ultra loud I know the 2nd unit of any Bluetooth headset!
The 3rd unit is so to speak my phone the Samsung Galaxy S3 LTE connection in seconds class sound stereo super absolute hammer!
Absolute buy recommendation for this device'll think for the future might have to buy one! I can recommend it to anyone here strike price is also in this Hammer Equipment very cheap! This quality is impressive absolutely! I am deeply impressed!