Range: 0-50 ohms Probe: 3 volts at 15 ma maximum Includes 2 AAA batteries Strong Audible 2khz Tone - Easy to confirm electrical circuit continuity, even in bright environments New design now provides greater flexibility by having two different terminations (banana plug or alligator clip) The added strain relief on the narrow end (where the wire enters) provides more durability Made in the United States of America: Superior qualityThis item is made and stocked in Chino, CA.