Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:

Create a detailed description for the following product: MOUNTAIN 400, belonging to category: Portable Power Station

### Response:
The MOUNTAIN 400 portable power station was designed with the outdoor traveller in mind. The small, lightweight product with built-in lithium-ion battery pack has multiple DC as well as two AC output interfaces that support simultaneous charging of various digital devices. The waterproof product housing is made of fire-retardant polycarbonate and aluminium. The handle of this compact cube is extendable, which reduces storage space and transport volume.
### End