13
①
Time indicator
②
TENS modes (P1-P16)
③
EMS modes (P17-P24)
④
Intensity indicator
⑤
Master mode selection button/lock button
⑥
Intensity decrease button
⑦
Time selection button
⑧
Two output ports
⑨
Mode number indicator
⑩
Lock indicator
⑪
Battery indicator
⑫
Intensity increase button
⑬
On / Off switch button & Sub-mode
selection button
⑭
USB port