Features:1. It is Li-Po Battery with for Syma X11 X4 X13 4CH 2.4GHz 6 Axis Gyro RC Quadcopter2. Lightweight， durable， practical and convenient to use3. High capacity and long life span4. 100% brand newSpecifications:1. Model: X4-0012. Battery Capacity: 200mAh3. Battery Voltage: 3.7V4. Cells: 2cells5. Continuous Discharge Rate: 20C6. Dimensions: 27mm*20mm*8mm (L x W x H) Package Includes:4 x 3.7v 200mAh Li-Po Battery1 x 4in1 USB charger