I have the F4 as well as my friend and it works great. Range is decent and quality is great. We used em on our way down to KY once and being able to talk the entire time was amazing not to mention it got dark on us and rainy so having me lead and him follow I could tell him my plans to merge and he could secure the lane before hand. Also randomly bursting into song always makes for a good trip. Battery life is great on these as well