1. Standard size for Raspberry PiHAT, compatible with Raspberry Pi 4B, 3B+, 3B, 2B, 3A+, and A+ development boards (not compatible with for Raspberry Pi 5).2. Cascading design saves space, simultaneously powering the for Raspberry Pi and expansion boards without affecting GPIO expansion.3. Supports fast charging technology up to 2A for quick battery charging.4. Can charge and power the for Raspberry Pi simultaneously.5. Features 4 LED power indicators;6. Removable battery (battery not included), users can choose a larger capacity lithium battery pack (Note: voltage must be 3.7V).7. Equipped with safety protection circuitry to prevent overcharging and over-discharging.8. Retains the for Raspberry Pi GPIO interface, allowing you to still use various expansion boards;9. It is a MiniUPs power supply; 5V/1.5A output, 5V/2A input.Color: Random ColorMaterial: PCBPackage Contents:1*Extension Board1 set of installation accessories (random color)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.