Extremely easy to use , build quality on the units themselves is good , battery life is great , BUT one little issue , Charging them !! They are very loose in the charger base and you need to make sure they lights are illuminated (Charging) but is someone was to knock off them slightly they can break contact with the charger base , I’ve seen some posts with people using a bit of paper jammed in the side to keep them in place . Apart from this issue Oh and why only provide 3 receivers… why not 2 or 4 … but 3 🤷🏻