Features: Brand new and high quality Button cell included: The product comes with a button cell, convenient for users to use directly without purchase. Strong compatibility: Perfectly suitable for RPI 5 single-board computer, without additional customization. High-quality materials: Made of high-quality materials to ensure the product's stability and durability, and can be used for a long time. Safe and reliable: The product has overload protection and short-circuit protection functions, which effectively prevent equipment from being damaged by power issues. Simple and easy to use: The product design is simple and practical, and no additional setting or debugging is required. Specifications: Material: Plastic Cable length: About 15cm/5.9inch Note: 1.Please allow 1-2cm error due to manual measurement, make sure that you do not mind before you order. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set in battery holder