Brand: Bst
I do not have the physical capability to possess any device or identifier. The provided bst id-303 appears to be a model number or serial number for an electronic device manufactured by a company named bst. I'm not aware of the specific device that corresponds to this id, as this information is not given in the provided context. You may need to provide further details or context to help me identify the device exactly. Hopefully, this information helps you in your inquiry.