Big Capacity and high quality. No "memory effect", and long battery life. Environmental design, over current protection, over charge and discharge protection. It is good, both in low and high temperature operations. Large batteries for the flashlight or other devices. Color: as shown in figure Type: Lithium Battery Model: 18650 Voltage: 3.7V Capacity: 3000mAh Package List: 4 * Battery Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3 cm.