Holosun IRIS 1 Single Function Green Laser Device Black. Additionally the IRIS 1 now features an on-board fire button for momentary or constant ON functions as well as an updated rear-facing selector switch to select modes and power for both the on-board fire button and the included remote activation button. IRIS 1 is available in Red Green or Infrared (IR) versions. Specifications for Holosun IRIS 1 Single Function Laser Device: Manufacturer: Holosun Color: Black Battery Type: Lithium Metal CR2 Battery Life: 10 hours Water Resistance Level: IPX8 Weight: 4.6 oz Fabric/Material: 7075-T6 Aluminum Package Contents: Holosun IRIS 1 Single Function Laser Device Holosun IRIS-GR1: IRIS 1 Single Function Green Laser Device Black