OT-R12:
1) SD / MMC card reader
2) USB 2.0 / 1.1 specification
3) Transfer rate: up to 12Mbps
4) Supports SD, SDC, MMC, RS-MMC, and HS-MMC cards
5) Plug and play and hot swapping supported
6) LED indicator
7) Power supply: DC + 5V supplied by USB port
8) Supported OS: Win 98SE / 2000 / ME / XP / Mac OS 8.6 or higher
9) Dimensions: 75 x 25 x 12mm

Packing:
Blister packing
G.W.: 28g

OT-R13:
1) SD / MMC card reader
2) USB 2.0 / 1.1 specification
3) Transfer rate: up to 12Mbps
4) Supports SD, SDC, MMC, RS-MMC, and HS-MMC cards
5) Plug and play and hot swapping supported
6) LED indicator
7) Power supply: DC + 5V supplied by USB port
8) Supported OS: Win 98SE / 2000 / ME / XP / Mac OS 8.6 or higher
9) Dimensions: 76 x 23 x 11mm