Fangrui Product Details With Storage And Segmented Memory Function, Commonly Uses Statements For Storage. Only Two Buttons And A Switch For Easy Operation. Includes Power-off Protection Function, Super Power Saving. Adjustable Speed Switch, The Potentiometer Of The Control Board Can Be Adjusted Anytime. Power Supply: 2 X Aaa Batteries (not Included) How To Use: J1:buzzer Mute L/r:di/da Or Da/di F1 Key Can Remember 60 Words ,and It Has Power-off Protection Fuction. F2 Key Can Remember 50 Words , It Doesnt Protect The Data When The Power Fails. R3 Key Is For Speed Control, Speed Getting Fast When The Value Of R3 Getting Down. Record: Keep Pressing On F1 /f2 For More Then Half Second, You Will Hear M, Now It Records Cw Automatically. When It Is All Done, Press F1/ F2, You Will Hear S. It Will Remind You By F If You Exceed The Volume, And The Extra Par T Will Noe Be Recorded. Message : Every Message Can Not Only Be Storaged By A Long Memory, It Also Can Be Separate Into Several Parts By Inputing Eom (end Of Message)at The End Of E