High quality and rechrageable high-capacity lithium battery core, secure, reliable, stable performance, ultra-high capacity, long standby time. Capacity standard: 3.7V, 780mAh.Suitable for Samsung X208/D728/X308.UV wear-resistant surface on many occasions to deal with. Original circuit design. America DUKAN ultrasound process, super durable. Built-in PCM, to prevent over charge, over-release,...