I have had the freedom JB-200 predecessor to these headphones for about 18 months. I loved the comfort of the JB-200; although I had to buy Acoustibuds to really get them to fit well. The JB-200 fit behind your ear, so the weight of the earphone was carried by the top of your ear, which is comfortable. I soak my clothes with sweat when I workout, prior to the jaybird jb-200 earphones I shorted out 2 other sweat-proof labeled headphones, including the hd-s9 motorolas. I loved the JB-200 earphones, I would have bought another pair, but they were end-of-lifed, and the freedom-fj3 is the replacement. My JB-200s broke because I am not careful with them, i dropped them several times, even once from 20 feet up onto concrete; I was not surprised when they finally broke.

I have worn the new freedom-fj3s 4 times. 1st with medium standard inserts, 2nd with medium deep plug inserts, 3rd with small deep plug inserts and gecko outer ear holders, 4th with medium standard inserts and small gecko outer ear holders. ... there are many options.

The 4th wearing with the normal plugs and the gecko strips was the most comfortable, but still bothered my ear. Maybe I will get used to it; definitely not as comfortable as the JB-200s.

The freedom fj3 do not fall out if you are using one of the gecko strips or the deep plugs.

I have not yet shorted them out from excessive sweat. (but even the hd-s9s lasted about 15 workouts till they started shorting out, so I'll make an update in a month.)

Sound quality: about the same as the JB-200. Base is a little weak, celerity is a little muffled, I would give them a 6/10 on sound ... if I didn't' sweat so much, the Motorola hd-s9's were far better sound, I would give them a 9/10.

Battery-life: more than 3 hours my longest workout so far with them).

I hope I find a more comfortable way to wear the freedom-fj3 earphones. I need music to get the most out of my workouts, and I prefer bluetooth. This seems like the best option currently available

UPDATE: owned for 2 months now

battery life seems to be about 5-6 hours (2 workouts at about 2.5 hours ea, battery wears out just about this time)

Comfort, I have found for me, I use the outer ear grips and the black earbuds, very comfortable. I am very happy with this purchase. I sweat a great deal when I workout, Jaybird is the only manufacture I have found which is waterproof enough not to burn out from the sweat. ... ooh, also I found my cell (android evo 4g) has an equilizer function. By editing the sound I am now much happier with the high range on these headphones.

Update 11 months: still work perfectly, no issues. I use them about 3 times a week while working out. I sweat heavily while working out but these do not short out... after i found the ear pieces which fit best, i have been happy with the fit. My only complaint would be i dislike the feeling of the cord on the back of my neck, so i let the cord hang under my chin instead.

Update: 1 year... exactly to the day! ... some failure on the headphones. The led is solid red, but the blue led still blinks. The headphones will still pair, +/- buttons stopped working as well. All was working fine until it wasn't.

Left an email for jaybird support. I will post the results.

Even if i cant get these fixed, I will still buy another pair; I still think they are the best sweat-proof bluetooth headphones.

>>>> support told me to follow warranty and RMA info on the site. Warranty is 1 year, so I am outside of this. I bought a replacement pair, these work well. If I get another year out of these with the abuse I put them through, I will be satisfied.