Four LED Light Bulbs with Bluetooth Speakers 60W incandescent equivalent with E27 Interface Energy saver - only 7 watts energy consumption with up to 650 lumens Bluetooth A2DP + EDR technology Built-in Class D speaker amplifier 2.5" speaker with 3W output power delivers precise high and crisp clear sounds with decent bass Easy Installation - simply screw into the light socket and connect via Bluetooth Working temperature: -40 ~80 Working voltage: AC 100-240V Color: Cool White Enclosure Materials: ABS Fully controllable with included remote control; remote distance: in 10 meters (3.3 ft.) Patented anti-loosening silicone ring prevents sound vibrations from unscrewing the bulb