It can be a bit fiddly to get on the ear until you figure the trick: Hold it with all five fingers, with the index finger on the back of the ear loop opposite the loop's hinge, and push it away from the earphone speaker. It can then slide over the ear from the top.When in standby mode, it picks up inbound calls pretty fast. But I wouldn't try to use it to answer a call if it's off, becuase to turn it on you have to press the button for 4 seconds.My only real problem with it is not specific to this headset, but to all wireless headsets: not quite loud enough for me to use in a car. It's louder than the Motorola I tried at twice the price, but for something this big, it could go louder still. This is certainly a problem with my ears rather than the headset, though.