In general perception, it's not really a big of a difference but some manufacturers use this differently on each product name, its useful and information to know the key difference between a blue stereo headset and headphones. Following are the key points which actually sets them apart.
Head phones are generally covers the entire ear with a speaker to deliver quality sound, whereas in the case of Headsets, the speaker usually sits outside of the ear.
Headphones are normally equipped with two speakers (binaural) which cover both the ear and Headsets are usually have only one speaker (monaural), covering only one ear. These are now latest and of the all time best Bluetooth Stereo headsets which have two speakers, which means the "Bluetooth stereo headset" is now equivalent to "Bluetooth head phones"
The Bluetooth application was considered to be the basic difference between Bluetooth headsets and Bluetooth head phones I its "Application" but now a lot of these Bluetooth devices offers exactly the same functions, however the classical difference is still there with some of the manufactures. While Bluetooth stereo head phone encourages stereo music but they probably will not support hands free communication with your mobile phone device (Most new Bluetooth stereo headphones do support hands free communication).
The Bluetooth stereo headsets allow users with the ability to listen to your favorite music and provide hands free mobile communication. Stereo Bluetooth headset automatically switches between cell phone call and music so one don't have to manually switch between Bluetooth features for availing both the features if music and phone call. It works in a way that when a phone call comes in, the headset notifies you - mostly with a sound beep, after the conversation has ended and the phone disconnects and the music will automatically resume.
Basic Feature of Bluetooth headsets and headphones
Most Bluetooth devices offer a range of up to 30 ft but some of the newer models, using the latest Bluetooth3.0 technology are now able to provide over 60 ft.The device average weigh is about 100 grams and easily sits inside ear to prove 15 to 17 hours of talk time and app 500 hours standby time. The latest Bluetooth hands free consumes less power and can provide unbelievable talk time of about 12 hours.
The convenience of wireless Bluetooth stereo audio is incredible as you don't have an annoying wire dangling around your neck. One can walk around home with Bluetooth stereo headphones / headsets and don't have to worry about carrying MP3 player or iPod. Now the latest electronic products including laptop, PC, TV, DVD player, home stereo, or MP3 player are equip with Bluetooth interface to wirelessly stream sound.