The one on the left side of this site is not bad and quality also not bad at all. I have been usuing it for a while and I usally buy $20 which goes good for 4 hours but I think their 4 hours are not exactly four hours. I used even this morning and the voice from both side was as good as from regular phone. Just do not call on Saturday in nepal becasue for some how that day the voice is not very clear as I have experianced for last few months.