This 330W AC Adapter for Topcon BC-19B was made in accordance with original specifications, 100% compatible with the original part. All Topcon BC-19B AC Adapter are CE/FCC/RoHS certified, tested by manufacturer to match and/or exceed specifications of OEM products. For even greater peace of mind, every Topcon BC-19B AC Adapter is backed by a solid 12-month warranty & 30-day Refund.