Spa apparatus comprising a hot tub (fig 2, 1001) and a lid device 1000, wherein the lid device comprises a lid 2 arranged to be moved from a first position covering the hot tub to a second position, where the hot tub is accessible; characterised in that the movement of the lid from the first position to the second position is arranged to be electrically driven and the apparatus comprises a transceiver. The device may contain rigid slats 73 to interlock during movement between first and second positions. It may contain a housing with an internal roller 75. It may contain Bluetooth speakers. It may contain studs 110 projecting from the hot tub surface and interfitting apertures 9 in the edge of the lid. It may contain a low-friction layered rail system to move the cover. The lid may be wheeled and have an insulative layer.