Manufacturer's Description:
Configuration: Single Diode, Diode: 5 milliWatt, Wavelength: 635 nm, Frequency: Variable from 1hz - 1,000hz, Weight: 3.1 lbs, Material: Machined Billet Aluminum Enclosure, Powder Coated for Durability and Ease of Cleaning, Hydro formed Membrane Switch ESD Shielded Hard-coated Polyester Design for Ease of Cleaning, Backlit Liquid Crystal Display (LCD), Power Source: Nickel Metal Hydride (NiMH) rechargeable battery, Process and Machine Patented US Patent No. (6,605,079B2; 6,013,096; 6,746,473)