We warranty all used items sold for 90 days. No manual included.
The HP Solve Equation Library Application Card is a colletion of equations and commands that enable you to solve typical science and engineering problems. The library consists of more than 300 equations grouped into 15 technical subjects containing more than 100 problem titles. Each problem title contains one or more equations that help you solve that type of problem.
Includes application card. Owner's manual sold separately.