Mighty Bright Carabiner LED Lights: Blue And Silver 2-Pack 2-Pack: One Blue and One Silver Carabiner Clip LED Light Bright White, Energy-Efficient LED Lasts 100,000 Hours Convenient Constant-On Switch - Beam Visible Up To One Mile Made From Strong, Lightweight Polycarbonate - Attaches To Almost Anything 24 Hours Of Battery Life - Lithium Batteries Are Included - Each Light Measures 2.5" X 0.25" X 1.5"