Keep your Sony WF-1000XM3 or WF-1000X headphones powered up with the Varta CP1254 A3 3.7V Battery. Specifically compatible with these models, including the WF-SP700N, this battery pack is designed to provide a reliable and long-lasting charge, ensuring your audio experience is uninterrupted. With a capacity of 55mAh, this high-quality Varta battery is crafted to meet the needs of your devices, offering consistent performance. Proudly manufactured in China, it represents both reliability and efficiency, making it an essential accessory for your Sony headphones.