ihr@mbp-de-ignacio ~ % diskutil info /dev/disk2
   Device Identifier:         disk2
   Device Node:               /dev/disk2
   Whole:                     Yes
   Part of Whole:             disk2
   Device / Media Name:       DataTraveler 3.0

   Volume Name:               Not applicable (no file system)
   Mounted:                   Not applicable (no file system)
   File System:               None

   Content (IOContent):       GUID_partition_scheme
   OS Can Be Installed:       No
   Media Type:                Generic
   Protocol:                  USB
   SMART Status:              Not Supported

   Disk Size:                 15.7 GB (15733161984 Bytes) (exactly 30728832 512-Byte-Units)
   Device Block Size:         512 Bytes

   Media OS Use Only:         No
   Media Read-Only:           No
   Volume Read-Only:          Not applicable (no file system)

   Device Location:           External
   Removable Media:           Removable
   Media Removal:             Software-Activated

   Solid State:               Info not available
   Virtual:                   No

ihr@mbp-de-ignacio ~ % diskutil info /dev/disk2s1
   Device Identifier:         disk2s1
   Device Node:               /dev/disk2s1
   Whole:                     No
   Part of Whole:             disk2

   Volume Name:               Not applicable (no file system)
   Mounted:                   Not applicable (no file system)
   File System:               None

   Partition Type:            83BD6B9D-7F41-11DC-BE0B-001560B84F0F
   OS Can Be Installed:       No
   Media Type:                Generic
   Protocol:                  USB
   SMART Status:              Not Supported
   Disk / Partition UUID:     B8FBBF7B-61E4-11ED-B182-33FF79E2CA06
   Partition Offset:          1536 Bytes (3 512-Byte-Device-Blocks)

   Disk Size:                 13.3 KB (13312 Bytes) (exactly 26 512-Byte-Units)
   Device Block Size:         512 Bytes

   Media OS Use Only:         No
   Media Read-Only:           No
   Volume Read-Only:          Not applicable (no file system)

   Device Location:           External
   Removable Media:           Removable
   Media Removal:             Software-Activated

   Solid State:               Info not available

ihr@mbp-de-ignacio ~ % diskutil info /dev/disk2s2
   Device Identifier:         disk2s2
   Device Node:               /dev/disk2s2
   Whole:                     No
   Part of Whole:             disk2

   Volume Name:               EFISYS
   Mounted:                   No

   Partition Type:            EFI
   File System Personality:   MS-DOS FAT12
   Type (Bundle):             msdos
   Name (User Visible):       MS-DOS (FAT12)

   OS Can Be Installed:       No
   Media Type:                Generic
   Protocol:                  USB
   SMART Status:              Not Supported
   Volume UUID:               31866381-059A-30A3-9E48-36366DF9693E
   Disk / Partition UUID:     B8FBBF83-61E4-11ED-B182-33FF79E2CA06
   Partition Offset:          40960 Bytes (80 512-Byte-Device-Blocks)

   Disk Size:                 2.1 MB (2097152 Bytes) (exactly 4096 512-Byte-Units)
   Device Block Size:         512 Bytes

   Volume Total Space:        0 B (0 Bytes) (exactly 0 512-Byte-Units)
   Volume Free Space:         0 B (0 Bytes) (exactly 0 512-Byte-Units)

   Media OS Use Only:         No
   Media Read-Only:           No
   Volume Read-Only:          Not applicable (not mounted)

   Device Location:           External
   Removable Media:           Removable
   Media Removal:             Software-Activated

   Solid State:               Info not available

ihr@mbp-de-ignacio ~ % sudo gpt -r show disk2
Password:
     start      size  index  contents
         0         1         PMBR
         1         1         Pri GPT header
         2         1         Pri GPT table
         3        26      1  GPT part - 83BD6B9D-7F41-11DC-BE0B-001560B84F0F
        29        51
        80      4096      2  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
      4176  30724656
ihr@mbp-de-ignacio ~ %