The Twin Stim which gives the user the choice of five Modes of TENS and two Modes of EMS * Features include  dual channels  seven modes  timer  patient compliance meter  new stronger 100 mA output  safety amplitude cover  sturdy metal belt clip and rubber side railings for maximum handling * Five TENS Modes: Burst / Normal / Modulation / SD1 / SD2 * Two EMS Modes: Synchronous  Alternate * System includes device  lead wires  four self-adhesive reusable electrodes  9-volt battery  hard plastic carrying case and instruction manual * Patient compliance meter can store up to 60 sets of operation manual * Power Source: 9-volt battery * Pulse Width: 50-300 s  adjustable * Pulse Rate: 2-150 Hz  adjustable *  Pulse Ramp: 1-8 seconds * Pulse Amplitude: 100 mA peak into 500 phm load * Contraction Time: 2-90 seconds * Relaxation Time: 2-90 seconds * Wave Form: Asymmetrical Bi-Phase Square Pulse *  Timer: 1-60 minutes or continuous * One year warranty
 Average lead time for shipping: 14 + days.