SELF POWERED SPOTLIGHT EMERGENCY BEACON, Battery Chemistry Nickel Metal Hydride, Battery Size Button/Coin Cell, Includes Batteries Yes, Number of Batteries 1, Rechargeable Yes, Beam Pattern Spot, Body Color White, Body Material Polymer, Lighting Technology LED, Number of Light Output Modes 1, Maximum Beam Distance 50 ft, Maximum Brightness 50 lm, Run Time at Maximum Brightness 4 hr, Weight with Batteries 13.1 oz, Charger Style Included USB Charger, Alternate Battery Size Not Applicable