1,Detachable red filter that can be used as a signal, 2,Adjustable lamp holder, 3,available flat or down the beam , Features: A very bright krypton gas-electric beads Sufficient power can be continuous use 180 minutes Adjustable lamp holder, available flat or down the beam Parallel-beam, no longer need to adjust the condenser degrees Detachable red filter that can be used as a signal Wireless ...