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 or R:di or da or da or di F1 key can remember 60 words ,and it has power-off protection fuction. F2 key can remember 50 words , it doesn't 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 or F2 for more then half second, you will hear 'M', now it records CW automatically. When it is all done, press F1 or f2, you will hear "S". It will remind you by "F" if you exceed the volume, and the extra par t will 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 of every segmentation. Play the segmentations: If you want play the second segmentation, just press the memory key 2 times if you want 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 key Colour: black Material: metal Package Contents: 1 x Morse Code Auto Memory Key Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.