<b>iStim ev-805</b> is your ultimate solution for pain relief. It features <b>4</b> Channels, <b>5</b> TENS modes, <b>3</b> EMS modes, <b>24</b> preset programs and <b>Rechargeable</b>. Just follow the manual and quick guide, then every user can be clear about this machine and incorporate it into your daily life without any problem <br><br> <b>iStim ev-805</b> is the highiest level model of iStim Series, and it's the high-end one for the experienced user and the 4 channels can let the user use 8 pieces electrode at one time. <b>iStim ev-805</b> has lots of modes and functions, but it's be designed easy-to-use, so even the new user can use it without any problem. <br><br><b>iStim ev-805</b> includes iStim ev-805 x<b>1</b>, Electrodes Pads x<b>24</b> (Including 3 types: 2"x2", 2"x2"(black), 2"x4"), lead wires x<b>4</b>, instruction manual x<b>1</b>, Quick guide x<b>2</b>, Sealable Bag x<b>2</b>, USB charger and lead x<b>1</b> and carrying case x<b>1</b> <br><br>The <b>5 TENS modes</b> include <b>Burst</b>, <b>Normal</b>, <b>Modulation</b>, <b>SD1</b> and <b>SD2</b>. The <b>3 EMS modes</b> include <b>Contant</b>, <b>Synchronous</b> and <b>Alternate</b>And the special mode includes (<b>P1~P24</b>)(<b>P1~12 - TENS</b>, <b>P13~P24 - EMS</b>), please refer to the quick guide to use the proper program on the proper postion. Besides, large liquid display(<b>Backlit</b>) showing the mode name and all settings is ideal for users to check the setting at any time <br><br> <b>Pulse Amplitude</b>: Adjustable, 0-100 mA peak into 500 ohm load <br><br><b>Wave Form</b>: Asymmetrical Bi-Phasic Square Pulse <br><br><b>Pulse Rate</b>: Adjustable, from 2 to 150 Hz, 1Hz/step <br><br><b>Pulse Width</b>: Adjustable, from 50 to 300 microseconds(μS), 10μS/step <br><br><b>Timer</b>: Adjustable, from 5 to 60 minutes or Continuous. <br><br><b>Battery</b>: Lithium Battery(Rechargeable)<br> <br><br><b>#DO NOT USE extra Electrode Gel with electrode pads</b>