The product is a 4000mAh internal battery pack specifically designed for the Sony Xperia 1 II model. With a voltage of 4.40v, this OEM battery is compatible with the Sony brand and is ideal for those looking for a heavy-duty, fast-charging solution for their mobile phone. Made in the UK, this battery ensures quality and reliability for extended use, making it a convenient accessory for Sony Xperia 1 II users.
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