I bought this device because of the price and the the fact that it can simultaneously pair with two devices. The features are as you'd expect and it doesn't waste your money with items like a readable screen ( I owned one that had this feature, could never read it when it was in my ear!) The battery life hasn't been challenged. It comes with a handy battery charger/carry case so you can recharge it while you park and run a quick errand. The modular charger neatly integrates with a home charger.The reason it doesn't get a five-star rating is that I think it does not stop charging and drains the battery - however, I must admit that I haven't confirmed this.