Products Package Includes: 8 x Battery. The 8pcs 3.7V 5000mAH 18650 Batteries has the characteristics of high quality and high density, whether operate in low temperature or high temperature, it is durable. In addition, it is rechargeable battery. It can provide continuous power for your device. It is worth having a try!. High quality and durable. Provides continuous power to your device. High energy density, long life battery. Durable in low and high temperature operations. Fit for camera, watch, calculators and other electronic devices.