Battery Type:Li-Polymer Voltage:3.7V Capacity:400mAh Dimension:4*30*30mm Fit for:DVR /GPS/ PSP/ PDA /MP3 /MP4 /Bluetooth Headset and so on Features: 1.Light and portable to carry. 2.High quality and durable in performance. 3.Made with high-performance materials and the latest technology. 4.Stable discharge curve, high discharge rate, reach the highest speed with the highest stability, and provide power for your devices. 5.Do not overcharge …