UnknownUser1
Android Expert
Just got a 4200 for $10+5 s&h for a bit faster delivery i dont mind the extra bulk so im lookin forward to more life
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I felt the same way.I returned mine the next day for a refund and picked up two stranded replacement batteries along with a wall/usb charger and i could not be happier.If i am heading out for a hike,run or bike ride and will be using the gps on Endomondo Sports Tracker along with my Bluetooth stereo headphones then i just toss one or both in my backpack,saddle bag or armband case and im good for the day this way its still sleek and comfortable and its not looking like some old outdated device,I knew as soon as i received it that it would not fit in my armband case and be to bulky to fit in my handle bar mounting bracket so that was the deal breaker.Its a good concept just not functional for my life style.
How accurate was everyone's estimated delivery date? Mine is now officially late
Mine took about 2 weeks, but I am patient waiting for stuff to come all the way from China. Sometimes there are even longer waits for some items that get stuck in customs.

Funny enough i switched back to my stock battery for a bit haha finally juiced my extended batteries up going to drain this one first![]()
my phone has eaten a lot of juice and it got fat so i put it on a diet 
What size did you get?
Mine was a 2 pack and 2 cases with I wall charger for 22 buck. I think the wall charger definitely charges these batteries faster than leaving it in the phone but I dont not even care anymore I just always have a battery that's gonna last all day that's why I got the 2 pack. While ones in the phone the other is on the wall