I got the HS805 to call home while trucking. I was sold on the AAA battery power source, because the rechargeable ones won't last on a 14 hour work shift and even then I have no 120V outlet to recharge.However, I have to say the audio output when adjusted to max volume is barely audible in an 18 wheeler at highway speeds. The wind and engine noise is much higher than in a car and similar to that heard in a 757 at 35000ft. For this reason alone, this headset is JUNK.The advertisements criminally overstate the talk and standby time as well. With a regular new Duracell AAA battery, I get a low battery tone after about 1 hour of standby. And with a 900mAh Duracell Rechargeable battery I get only 6 hours of standby time before hearing the low battery tone.As for the marketing department at Motorolla, I have to say GREAT JOB for deceiving and misrepresenting an inferior product that lacks stated function and durability. I hope you enjoy earning a check based on lying to people. Hint: Get a job that actually contributes to society versus fleecing society. You should be proud!