Note: This case requires assembly. This version does not allow the 2 x AAA battery pack to be bolted on to the back as it is designed to fit tight against the mounting surface. For a version that does have a mounting plate, please see MI:pro Protector Case for the BBC micro:bit. Features: Ideal for use in USB powered applications. Provides direct access to A and B buttons. Provides direct access to the micro USB connection and reset button on the back of the BBC micro:bit. Provides excellent protection for the BBC micro:bit while allowing access to the bottom pins. Clear case material shows the on-board LEDs in perfect clarity. Contents: 4 x M3 Cheese Head Nylon Machine Screw. 4 x M3 Nylon Full Nut. 1 x Back Mounting Plate. 1 x Front Plate. 2 x Mid-layer Plate. Dimensions: Length: 93mm. Width: 37mm. Height: 27mm.