Difference between Datetime and Datetime2

Below list is major difference between Datetime and Datetime2 in Sql Server;

	Datetime	Datetime2
Storage Size	8 byte	6-8 Byte.
Min Value	1753-01-01 00:00:00	0001-01-01 00:00:00
Current Datetime	GetDate() - returns DB Current DateTime of datetime Data Type	SYSDATETIME()  - returns Current DateTime of DateTime2 Data Type
+/- Operator	+/- operator works, e.g  GetDate() + 1	+/- operator not works; DateAdd function required to add date.
Syntax	Declare @now datetime	Declare @now datetime2(7)