SF-1 is a hanging mini Strobe Light with 2 foot cord and plug Great for bands, DJs, home parties or special effects & theatre productions Includes replaceable clear dome Optional dome colors sold separately: Yellow (City Dome/Y), Green (City Dome/G), Blue (City Dome/B), or Red (City Dome/R) Control Knob with 4 Flash Speeds (1 flash per 5 seconds, 1 flash per 2 seconds, 2 flashes per second or 7 flashes per second) Power: 100-120V, 60Hz, 7W max Lamp Life: Approx 5,000 hours Dimensions: 3.5� x 2� / 88x50mm Weight: .5 lbs. / .20 kg. Type: Strobe Light