This original Sony battery is compatible with models W810, W550, W600, and Z710. It is a standard battery with the model number BST-37 and is an OEM product. The battery is specifically designed for cell phone accessories and is ideal for those who want a reliable and durable battery. With its brand name Sony, you can be sure that this battery is of high quality. This battery is a great investment for individuals who are looking for a reliable cell phone accessory that will last a long time.