Function button switches between 4 modes: high (front), low (front), high (barrel) and high (front & barrel), Features an adjustable light beam by push/pull focusing action, Includes 1 x 18650 rechargeable battery, USB charging cable and adjustable clip, Approx 4-5 hours of charge time, Approx 90 minutes of run time, Aluminum body, Output: up to 400 Lumens (barrel) and 350 Lumens (front), Bulb Type: 5W LED (front) and COB (barrel),