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 muteL/R:di/da or da/diF1 key can 60 words ,and it has power-off protection fuction.F2 key can 50 words , it doesn' protect the data when the power fails.R3 key is for speed control, speed fast when the value of R3 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 the volume, and the extra par will be recorded.Message : message can not only be storaged by a long memory, it also can be separate into severalparts by inputing EOM (End of Message)at of segmentation.Play the segmentations: If you play the second segmentation, just press the memory key 2 ; if you the third one,then press the key 3times, et cetera . mode:press F1 AND F2 at the same time, you will hear "C",now it is under the mode of End mode: press F1 and F2 at same time again, or you can input "D" by pressing the auto keyColour: blackMaterial: metalPackage Contents:1 * Morse Code Auto Memory Key ControllerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.