COB (chips on board) LED (light emitting diode) keychain light. Carabiner hook for easy removal and small magnet on back-side. 3 light modes, full power, partial power, and flashing light. Rubber coated and powered by 2 CR2032 batteries that are included. Super bright 200 Lm (lumens). Impulse display contains (24) 6 of green, orange, blue and red.