Stay warm during your outdoor activities with these sleek black OCOOPA rechargeable hand warmers. Featuring a magnetic design and electric operation, these units are perfect for winter sports and hiking. The rechargeable battery ensures long-lasting warmth, while the unit's compact size makes them easy to carry in your pocket or backpack. Enjoy the benefits of these hand warmers during your next winter adventure. equipped with a range of features including a rechargeable battery and black colour, these hand warmers are the perfect addition to your outdoor gear.the packaging has been opened but they have never been used. Thanks.