Purchased this to fit out the final two rooms in my parent's house. Thoroughly impressed by the build quality of the bayonet fitting, a problem I have had with past bulbs. The profile is also low enough when mounted sideways to fit in old home ceiling fixtures which is an added bonus. Connects to the wifi without any hassle, just make sure to follow the in-app instructions carefully. Have never lost connectivity and the bulb changes colours without any perceptible lag when controlling through the app. Great product, would recommend any day.