... laser light show 2. laser display system 3. laser power:30mw green 4. certificate:CE & Rohs 5.Auto & Sound Laser light show, laser display system, laser display light30mw green laser display light show ... .5*25.5cm/16PCS21. Guanrantee: one yearApplicable for Disco, Clubs, KTV, Pub, Bar, family party, stage, etc. 30mw green laser display light show system