These offer an overall good sound, light on bass, though nice mid range and clear high end. The sound experience is quite unique as you can still hear the outside world and enjoy your favourite music. Ideal for walking or riding when you want to be aware of your surroundings. The lens in them are OK, plenty of replacement options available as well.
I have a pair of prescription lens I have added for office use, they make great reading glasses and doubling up as a Bluetooth headset for conference calls. Just make sure you are not seated close to someone as there is some sound leakage. I will either need a second set to avoid swapping lenses or decide which is the better use. Battery life is acceptable, the proprietary charging cable is a downer and really should be a common standard. If the use case suits you, recommended.