Chassis kit in various parts (attached together, must be cut to be sepatated).
Compatible with ProffiesBoard, NB, Prizm5.1, Prizm4, CF9, Igniter3
18500 battery (NB install) or 18350 (other soundboards),
1.3mm recharge port
28mm speaker. Also has 2 slots on the back, for on/off switch (and MicroJST female for RICE port).