hopped-up by two 2016 Lithium coin cell batteries, the INOVA Microlight is an clever small diode, with a surprisingly strong performance - it has an useful range of up to a 50-feet, and one-mile signal visibility. The Microlight also four lighting functions and a water-and-crush-resistant body, plus a stainless-steel worldwide clip that attaches easily to keys, zippers, purses, backpacks, and any number of handy locations.