Package contents: you will receive 12 pieces of pen lights, including 6 pieces of approx. 3.5 x 0.55 inch and 6 pieces of approx. 5.24 x 0.55 inch pen lights; Keep them in your car, in your home, or make them as gifts to a friend or family member; Batteries are not included Pocket size: the pocket flashlight of approx. 3.5 x 0.55 inch can emit 180 lumens of light, only takes 1 x AAA alkaline battery (not included); Approx. 5.24 x 0.55 inch penlight can emit 250 lumens of light, it takes 2 x AAA alkaline batteries (not included); These small flashlights are small and light enough to slip into a pocket, backpack or purse