HIGH-PERFORMANCE IN EVERY ROOM. The GRAVITY ONE Bluetooth Speaker features state-of-the-art ‘sit anywhere’ Uni-Q® technology: projecting sound 360° around the room for total listening freedom. Whether in the boardroom or the living room, the GRAVITY ONE speaker packs a powerful punch -- far exceeding its size! -- as it simultaneously blends Porsche Design's distinctive style with the precision engineering indicative of KEF. The purity of its sound is maximized by the inert, one-piece, anodized-aluminium housing and Bluetooth v4.0 with aptX-Codec. Ten hours of playtime are possible, while an additional USB connection allows charging of portable devices.