Spec:Product Material: Aluminium AlloyProduct Model: MX-K2How to Use:Battery: 2 x AAA Battery ( not included)J1: Buzzer mute. L/R: di/da or da/diF1 key can remember 60 words, and it has power-off function.F2 key can remember 50 words, it doesn't 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 part will not be recorded.Message : Every message can not only be stored by a long memory, it also can be separate into severalparts by inputting EOM (End of Message)at the end of every segmentation.Play the Segmentation: 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, etc .Command Mode: Press F1 AND F2 at the same time, you will hear C, now it is under the mode of command. End Command Mode: Press F1 and F2 at same time again, or you can input D by pressing the auto key.When you use the auto key, will make a judgement: you will hear R for the right command, and ? for invalid command.A: Turn off the memory of long-short voice.B: Turn on the memory of long-short voice. This is the most common command.C and E: Repeat play. it will stop automatically after playing 255 times under the 'E' command mode.You just press the short voice auto key if you want to turn it off. Press it again, after keyer making the judgement of R, it will be over.C can't stop automatically, but it can be used as a sign. You just press the short voice auto key if you want to turn it off.Package List:1 x Morse Code Keyer1 x User Manual