For Matrix:Bit V3.0 Development Board with 4G Extension Board for Matrix Bit Programming Expansion B Learning programming requires only two steps: 1. Connect the For Matrix:bit V3.0 Development Board to your computer. 2. Start programming. Large 1.54-inch screen: Full color for a more premium look, say goodbye to black screen issues. Clear data reading in both bright and low-light environments, with a vibrant color experience for a more refined visual experience. Detection Function: Equipped with a GC0308 camera, it enables rapid image detection and is capable of face and object recognition. Powerful Core Performance: Supports Mind+, features a dual-core processor, and offers enhanced storage. Advanced Microphone: Equipped with an advanced microphone, it brings intelligent voice interaction to your creative projects. Specification:B:Built-in 600mah battery/A:No battery Color:As Shown Material:PCB Package Contents: 1 * Development Board kit 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.