The standby time is excellent, I work 11 hour shifts and it easily lasts for 2 shifts or more, I use the phone thought the shift and have not managed to run the battery down yet! I also work outdoors and the clipper has coped well even in bad weather.
The connection is great, if I leave the phone in the car I notice it reconnects within 5 metres of me returning to the car!
The Clipper gives you a reassuring bleep in your ear when you are back in range of the phone, when you turn it on and off. Charging is easy though USB, same connection as the phone!
The audio quality in my ear is great, I have used this device with a separate earpiece to the headphones for work purposes, It looks smart, and having a larger phone like the S4 Note you don't look like a wally holding up a brick to your ear!
Really impressed with this device, I did loose it, which was my fault because its so small, but I had no hesitations in buying another straight away as it is so very good.