This is a switching adapter by RS model RSS1002-005050-W2.
Input: 100-240V~50/60Hz, Max 0.6A
Output: 5.0V--0.1 A0.5W MAX
It measures about 2" tall, 1.25" wide, and 1.5" deep. The cord measures about 72" long.
This item is pre-owned and in good condition.