Sengled pulse is an energy saving app controlled led light with a 13 watt jbl bluetooth loudspeaker this 2 pack includes one master bulb and one satellite bulb each with an integrated jbl multi channel stereo wireless speaker experience the soaring highs and the rich stereo sound of jbl combined with warm dimmable lighting without the fuss of speaker wires power cords or an independent remote control simply screw the sengled pulse led bulbs into existing light fittings and pair the satellite bul