NOTE: This engine is USED - has been internally upgraded to MTH ProtoSound 2.0
FEATURES LABEL SHOWN IN LAST PHOTO
Link to instruction manual PDF file:
https://d2frr7198pxftr.cloudfront.net/production/public/download/instruction/20st19502i.pdf?VersionId=ywX.nknaMRAFX0cFanSsa1vcKuTMXN7P