This is a smartphone power jacket that is compatible with the Galaxy S4 and Note 3. It is well engineered to deliver reliable and stable performance. This power jacket offers an extra-long service life.

• The best power solution for 4G LTE generation.
• World thinnest battery with 1,000/1,250mAh capacity (additional).
• Patented technology for power supply.
• Comprehensive protection for Galaxy S4 and Note 3.
• Perfectly integrated with Samsung Galaxy S4 and Note 3.
• Front cover protect fragile display panel.
• No extra cable required.
• Combines with original battery in a parallel circuit.
• High capacity with high efficiency.
• Very lightweight and very slim.
• Expand continuous usage time around 40%.
• Extend original battery lifetime (loading balance).
• Made with ceramic materials, very reliable, very stable and very safe.