The Pointer Excel II is a user-friendly electroacupuncture point stimulator whose built-in LCD digital meter displays both frequency and point location. Push-button stimulation delivers treatment on demand, and the output dial selects normal milliamp output or microamp current (the blue zone on the dial). A polarity reversal switch provides tonification (+) or sedation (−).Specifications Output: 1 channel Frequency: 1–16 Hz, adjustable, shown on LCD LCD meter: 0.35" × 1.0" (frequency and location) Normal dial: 22.5 V, 0–45 mA Microamp (blue zone): 11 V, 0–2 mA Polarity reversal: +/− via switch Pulse width: 260 µs Waveform: asymmetric biphasic square wave Mode: continuous Point location: skin impedance monitoring via meter, sound and light Power: one 9 V battery (not included) Dimensions / weight: 8.6" × 1.5" × 1", 86 g, beige Two grounding plates for left- or right-hand use In the box Hand probe with grounding pole and attached wire 2 probe tips: ear 2 mm (0.08") and body 4 mm (0.16") Carrying case and instructions Warranty: 1 year, unit only.Regulatory note: Federal law restricts this device to sale by or on the order of a physician or other licensed practitioner.