The CliQ series MTBF (Mean Time Between Failure) is more than 500 k hours (hrs) for low output power and more than 300 K hrs for mid to high output power. The CliQ II series improve MTBF to more than 800 k hrs and 500 k hrs for low output power and mid to high output power respectively. Efficiency of CliQ II series can deliver up to 90% at high line input voltage.