Promate Waterproof flashlight 10,000 mcd LED Light -DL050 Luminous intensity: 10,000 mcd/LED, 5-&oslash;5mm super bright LED life time: more than 10,000 hours. 4X"AAA" alkaline batteries (not included.) Burn Time: over 60 hours. Convenient bezel twists for power on/off with a o-ring waterproof seal Small, compact, lightweight: &oslash1.6x5.2" and 1.8 oz (not include batteries) Comes with a nylon wrist lanyard.