Richway Continuity Loop Phone Set️- Colored Vegas: All Electricians, Instrument Techs, Automotive Techs, Maintenance workers, etc, should have our high quality, professionally made continuity tester in your tool bag! 12V internal battery and carrying bag included! Features: Soldered joints High quality parts and craftsmanship 12v battery included Nice carrying bag included Multiple color choices Hook & loop straps to secure wire leads On/off switch Bright LED indicator light 1 year warranty Extended warranty available Customer support -DO NOT USE ON LIVE CIRCUITS